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Prom 2025 is Arriving Daily!!! Text us at 484-580-9417 to book your appointment!

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610.265.7766

KING of PRUSSIA MALL

Call for an Appointment

215.702.8586

OXFORD VALLEY MALL

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    • Overview
    • Aleta
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    • Elie Wilde - OV
    • Faviana / Faviana Glamour
    • Faviana Curves
    • Formals XO Exclusives
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    • Johnathan Kayne
    • Jovani Prom
    • La Femme
    • Portia & Scarlett
    • Portia & Scarlett Couture
    • Portia & Scarlett Evening
    • Portia & Scarlett Pageant
    • Portia & Scarlett Prom
    • Primavera
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    • Stella Prom
    • Tiffany Designs
    • Tiffany Plus
    • Overview
    • Aleta Shorts
    • Alyce Semi-Formal
    • Amarra Homecoming
    • Clarisse Homecoming
    • Damas Collection by House of Wu
    • Damas de Vizcaya
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    • Formals XO Exclusives Short
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    • Jessica Angel Cocktail
    • Jovani Semi - Formal
    • LaFemme Semi-Formal
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    • Tiffany Homecoming
    • Overview
    • House of Wu Quinceanera
    • Morilee Vizcaya
    • Portia & Scarlett Ballgowns
    • Princesa
  • Sale
  • Semi-formal dresses Langhorne Pennsylvania King of Prussia Pennsylvania
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  • JOVANI COLLECTIONS
    +
    • Jovani - Bridal
    • Jovani - Informal Wedding
    • Jovani - Couture
    • Jovani - Evenings
    • Jovani - JVN Evening
    • Jovani - Maslavi
    • Jovani Semi-Formal
    • Jovani - Pageant
    • Jovani - Prom
    • JVN Prom by Jovani
  • SHERRI HILL COLLECTIONS
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    • Sherri Hill Prom
    • Pearl Bridal by Sherri Hill
  • TOP 10 PROM CATALOG
    +
    • TOP 10 PROM CATALOG
  • PROM
    -
    • Aleta
    • Alyce Paris
    • Amarra
    • Ashley Lauren
    • Colors Dress
    • Elie Wilde - OV
    • Faviana / Faviana Glamour
    • Faviana Curves
    • Formals XO Exclusives
    • Jasz Couture
    • Jessica Angel
    • Johnathan Kayne
    • Jovani Prom
    • La Femme
    • Portia & Scarlett
    • Portia & Scarlett Couture
    • Portia & Scarlett Evening
    • Portia & Scarlett Pageant
    • Portia & Scarlett Prom
    • Primavera
    • Primavera Curvy Plus
    • Scala
    • Sherri Hill
    • Stella Prom
    • Tiffany Designs
    • Tiffany Plus
  • COCKTAIL/SHORT
    +
    • Aleta Shorts
    • Alyce Semi-Formal
    • Amarra Homecoming
    • Clarisse Homecoming
    • Damas Collection by House of Wu
    • Damas de Vizcaya
    • Faviana Cocktail
    • Formals XO Exclusives Short
    • Jasz Homecoming
    • Jessica Angel Cocktail
    • Jovani Semi - Formal
    • LaFemme Semi-Formal
    • MoriLee Sticks & Stones
    • Portia & Scarlett Cocktail
    • Primavera Short
    • Scala Cocktail
    • Sherri Hill Cocktail
    • Tiffany Homecoming
  • QUINCEANERA & SWEET 16
    +
    • House of Wu Quinceanera
    • Morilee Vizcaya
    • Portia & Scarlett Ballgowns
    • Princesa
  • BRIDESMAIDS
    +
    • Adrianna Papell Bridesmaids
    • Christina Wu Celebrations
    • JESSICA ANGEL COLLECTON
    • Morilee Bridesmaids
  • MOTHER of the BRIDE/GROOM
    +
    • Christina Wu Elegance
    • La Femme Evening
    • MGNY for Morilee
    • Montage
  • CLEARANCE
    +
    • Sale Gowns and Dresses
  • More Styles
    -
    • Prom Dresses
    • Glitter Fabric
    • Bridal Gowns
    • Ballgowns
    • Beaded/Sequin
    • High-Low
    • Jumpsuits/Pants (Online Only)
    • Lace
    • Mermaid
    • Plain
    • Prints
    • Plus Sizes
    • Pageant
    • Semi-Formal
    • Sleeves
    • Two-Piece

Semi-formal dresses Langhorne Pennsylvania King of Prussia Pennsylvania

Sassy, Sexy, Short! Cocktail dresses for all special occasions at Formals XO. New cocktail dress styles for Homecoming. Cocktail dresses from Mori Lee, sexy short dresses by Sherri Hill, short cocktail dresses by Jovani, Alyce Paris, and much more.
Sort By:
Sherri Hill 54403

54403 Sherri Hill

$350  
IN STOCK
Sherri Hill 54430

54430 Sherri Hill

$350  
IN STOCK
Sherri Hill 54833

54833 Sherri Hill

$350  
IN STOCK
Sherri Hill 55199

55199 Sherri Hill

$398  
IN STOCK
Sherri Hill 56541

56541 Sherri Hill

$398  
IN STOCK
Formals XO Exclusive XOBZ013S

XOBZ013S Formals XO Exclusive

$200  
IN STOCK
Sherri Hill 55967

55967 Sherri Hill

$398  
IN STOCK
Sherri Hill 55153

55153 Sherri Hill

$398  
IN STOCK
XO Exclusive XO395

XO395 XO Exclusive

$250  
IN STOCK
Jovani Short Dresses 06016

06016 Jovani Short Dresses

$398  
IN STOCK
Jessica Angel Collection 2380

2380 Jessica Angel Collection

$250  
IN STOCK
JASZ Couture 1112

1112 JASZ Couture

$548  
IN STOCK
JASZ Couture 1180

1180 JASZ Couture

$504  
IN STOCK
Sherri Hill 56631

56631 Sherri Hill

$350  
IN STOCK
Jovani Short & Cocktail 04699

04699 Jovani Short & Cocktail

$410  
IN STOCK
Jovani Short Dresses 63899

63899 Jovani Short Dresses

$410  
IN STOCK
JASZ Couture 1113

1113 JASZ Couture

$350  
IN STOCK
Sherri Hill 56579

56579 Sherri Hill

$398  
IN STOCK
Sherri Hill 56438

56438 Sherri Hill

$398  
IN STOCK
Amarra Homecoming 88056

88056 Amarra Homecoming

$225  
IN STOCK
Jessica Angel Collection 942

942 Jessica Angel Collection

$250  
IN STOCK
La Femme Homecoming Dress 30104

30104 La Femme Homecoming Dress

$238  
IN STOCK
Amarra Homecoming 88023

88023 Amarra Homecoming

$350  
IN STOCK
Jessica Angel Collection 941

941 Jessica Angel Collection

$250  
IN STOCK
La Femme Homecoming Dress 32625

32625 La Femme Homecoming Dress

$218  
IN STOCK
La Femme Homecoming Dress 32617

32617 La Femme Homecoming Dress

$258  
IN STOCK
JASZ Couture 1170

1170 JASZ Couture

$394  
IN STOCK
Sherri Hill 55968

55968 Sherri Hill

$450  
IN STOCK
Portia and Scarlett Cocktail PS23138

PS23138 Portia and Scarlett Cocktail

$349  
IN STOCK
Jovani Homecoming Dresses 07669

07669 Jovani Homecoming Dresses

$462  
IN STOCK
ALETA 668

668 ALETA

$297  
IN STOCK
Sherri Hill 55116

55116 Sherri Hill

$298  
IN STOCK
Portia and Scarlett Cocktail PS23120

PS23120 Portia and Scarlett Cocktail

$349  
IN STOCK
La Femme Homecoming Dress 30947

30947 La Femme Homecoming Dress

$250  
IN STOCK
Jessica Angel Collection 2345

2345 Jessica Angel Collection

$250  
IN STOCK
La Femme Homecoming Dress 30345

30345 La Femme Homecoming Dress

$278  
IN STOCK
ALETA 346

346 ALETA

$251  
IN STOCK
Sherri Hill 56578

56578 Sherri Hill

$350  
IN STOCK
Sherri Hill 56455

56455 Sherri Hill

$398  
IN STOCK
JVN Homecoming JVN05733

JVN05733 JVN Homecoming

$328  
IN STOCK
Sherri Hill 53151

53151 Sherri Hill

$398  
IN STOCK
Sherri Hill 54831

54831 Sherri Hill

$350  
IN STOCK
Scala 60060

60060 Scala

$220  
IN STOCK
Sherri Hill 51311

51311 Sherri Hill

$298 $249.99 
IN STOCK
Alyce Paris 1058

1058 Alyce Paris

$125 $99.99 
IN STOCK
La Femme Homecoming Dress 32631

32631 La Femme Homecoming Dress

$298  
IN STOCK
La Femme Homecoming Dress 31035

31035 La Femme Homecoming Dress

$298  
IN STOCK
ALETA 367

367 ALETA

$228  
IN STOCK
Sherri Hill 56697

56697 Sherri Hill

$650  
IN STOCK
Amarra Homecoming 88077

88077 Amarra Homecoming

$378  
IN STOCK
Sherri Hill 54469

54469 Sherri Hill

$350  
IN STOCK
Sherri Hill 54000

54000 Sherri Hill

$298  
IN STOCK
Sherri Hill 55229

55229 Sherri Hill

$450  
IN STOCK
Sherri Hill 55119

55119 Sherri Hill

$450  
IN STOCK
Sherri Hill 51390

51390 Sherri Hill

$398  
IN STOCK
XO Exclusive 20137

20137 XO Exclusive

$225  
IN STOCK
XO Exclusive S2323

S2323 XO Exclusive

$160  
IN STOCK
Sherri Hill 56756

56756 Sherri Hill

$898  
IN STOCK
Jessica Angel Collection 2346

2346 Jessica Angel Collection

$310  
IN STOCK
La Femme Homecoming Dress 30946

30946 La Femme Homecoming Dress

$298  
IN STOCK
La Femme Homecoming Dress 30214

30214 La Femme Homecoming Dress

$218  
IN STOCK
La Femme Homecoming Dress 30356

30356 La Femme Homecoming Dress

$238  
IN STOCK
La Femme Homecoming Dress 32658

32658 La Femme Homecoming Dress

$278  
IN STOCK
La Femme Homecoming Dress 30349

30349 La Femme Homecoming Dress

$238  
IN STOCK
La Femme Homecoming Dress 29316

29316 La Femme Homecoming Dress

$238  
IN STOCK
La Femme Homecoming Dress 32505

32505 La Femme Homecoming Dress

$338  
IN STOCK
La Femme Homecoming Dress 31769

31769 La Femme Homecoming Dress

$278  
IN STOCK
La Femme Homecoming Dress 32636

32636 La Femme Homecoming Dress

$338  
IN STOCK
La Femme Homecoming Dress 30920

30920 La Femme Homecoming Dress

$298  
IN STOCK
La Femme Homecoming Dress 30286

30286 La Femme Homecoming Dress

$238  
IN STOCK
JASZ Couture 1200

1200 JASZ Couture

$350  
IN STOCK
Sherri Hill 56582

56582 Sherri Hill

$498  
IN STOCK
Sherri Hill 56525

56525 Sherri Hill

$498  
IN STOCK
Sherri Hill 56777

56777 Sherri Hill

$398  
IN STOCK
Amarra Homecoming 88041

88041 Amarra Homecoming

$426  
IN STOCK
Amarra Homecoming 88072

88072 Amarra Homecoming

$378  
IN STOCK
Amarra Homecoming 88005

88005 Amarra Homecoming

$318  
IN STOCK
Amarra Homecoming 88019

88019 Amarra Homecoming

$398  
IN STOCK
Amarra Homecoming 88039

88039 Amarra Homecoming

$398  
IN STOCK
Damas Quinceanera Dresses 9588

9588 Damas Quinceanera Dresses

$230 $175.99 
IN STOCK
Damas Quinceanera Dresses 9589

9589 Damas Quinceanera Dresses

$209  
IN STOCK
Sherri Hill 54427

54427 Sherri Hill

$350  
IN STOCK
Sherri Hill 55111

55111 Sherri Hill

$550  
IN STOCK
Sherri Hill 55108

55108 Sherri Hill

$450  
IN STOCK
La Femme Homecoming Dress 30145

30145 La Femme Homecoming Dress

$218  
IN STOCK
La Femme Homecoming Dress 30348

30348 La Femme Homecoming Dress

$250  
IN STOCK
Faviana Glamour S10712

S10712 Faviana Glamour

$298 $225 
IN STOCK
Sherri Hill 55265

55265 Sherri Hill

$498  
IN STOCK
Jovani Short & Cocktail 2666

2666 Jovani Short & Cocktail

$400  
IN STOCK
La Femme Homecoming Dress 30343

30343 La Femme Homecoming Dress

$238  
IN STOCK
Sherri Hill 52986

52986 Sherri Hill

$298 $199.99 
IN STOCK
La Femme Short Dress 25141

25141 La Femme Short Dress

$218  
IN STOCK
Hannah S 27012

27012 Hannah S

$290 $199.99 
IN STOCK
Formals XO Exclusive S2328

S2328 Formals XO Exclusive

$160  
IN STOCK
Formals XO Exclusive S2324

S2324 Formals XO Exclusive

$175  
IN STOCK
XO Exclusive S2331

S2331 XO Exclusive

$175  
IN STOCK
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We provide the dress.
You provide the personality.

We want your special occasion shopping experience to be just that - an experience. Our seasoned staff requires an appointment to try on but we encourage you to stop by anytime and browse. To book an appointment, please call us at either of our locations or Text 484-580-9417

We also require ALL PROM and HOMECOMING SHOPPERS be accompanied by a parent/guardian over 25 years of age because our gowns are very delicate and may require assistance to try on. Consume your morning coffee before entering the store. We have a no food/drink policy in our store for all guests. Even spilled water can destroy a dress! Thank you for understanding!

XO

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Hours

Monday - Thursday 11-7

Friday & Saturday 10-7

Sunday 11-6

Appointments Required.

$50 Deposit for Bridesmaid and Mother's Appointments

$100 for Bridal Appointments and Ballgown Appointments

CUSTOMER SERVICE
  • Contact Us
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  • Please No Food or Drinks in the Store! Thank you
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Locations
Oxford Valley Mall
2300 E Lincoln Hwy
Langhorne, PA 19047
Next to Macy's Upper Level
APPOINTMENT REQUIRED
(215) 702-8586
King Of Prussia Mall
160 N Gulph Rd
King Of Prussia, PA 19406
Next to L.L. Bean Upper Level
APPOINTMENT REQUIRED
(610) 265-PROM
formalsxo@aol.com
Text Us 484-580-9417
  • Prom
  • Cocktail/Short
  • Quinceañera
  • Sale
Search Only in this Category
+Price Filter:
+Search In-Stock by Size
Select up to 3 sizes
Filter for In-Store Stock


+Narrow by Feature
Occasion
Type
Feature
Back Style
Color Scheme
Embellishment
Fabric
Hemline/Train
Neckline
Silhouette
Sleeve
Straps


+Narrow by Color


Shop by Designer

JOVANI COLLECTIONS

  • Jovani - Bridal
  • Jovani - Informal Wedding
  • Jovani - Couture
  • Jovani - Evenings
  • Jovani - JVN Evening
  • Jovani - Maslavi
  • Jovani Semi-Formal
  • Jovani - Pageant
  • Jovani - Prom
  • JVN Prom by Jovani

SHERRI HILL COLLECTIONS

  • Sherri Hill Prom
  • Pearl Bridal by Sherri Hill

TOP 10 PROM CATALOG

  • TOP 10 PROM CATALOG

PROM

  • Aleta
  • Alyce Paris
  • Amarra
  • Ashley Lauren
  • Colors Dress
  • Elie Wilde - OV
  • Faviana / Faviana Glamour
  • Faviana Curves
  • Formals XO Exclusives
  • Jasz Couture
  • Jessica Angel
  • Johnathan Kayne
  • Jovani Prom
  • La Femme
  • Portia & Scarlett
  • Portia & Scarlett Couture
  • Portia & Scarlett Evening
  • Portia & Scarlett Pageant
  • Portia & Scarlett Prom
  • Primavera
  • Primavera Curvy Plus
  • Scala
  • Sherri Hill
  • Stella Prom
  • Tiffany Designs
  • Tiffany Plus

COCKTAIL/SHORT

  • Aleta Shorts
  • Alyce Semi-Formal
  • Amarra Homecoming
  • Clarisse Homecoming
  • Damas Collection by House of Wu
  • Damas de Vizcaya
  • Faviana Cocktail
  • Formals XO Exclusives Short
  • Jasz Homecoming
  • Jessica Angel Cocktail
  • Jovani Semi - Formal
  • LaFemme Semi-Formal
  • MoriLee Sticks & Stones
  • Portia & Scarlett Cocktail
  • Primavera Short
  • Scala Cocktail
  • Sherri Hill Cocktail
  • Tiffany Homecoming

QUINCEANERA & SWEET 16

  • House of Wu Quinceanera
  • Morilee Vizcaya
  • Portia & Scarlett Ballgowns
  • Princesa

BRIDESMAIDS

  • Adrianna Papell Bridesmaids
  • Christina Wu Celebrations
  • JESSICA ANGEL COLLECTON
  • Morilee Bridesmaids

MOTHER of the BRIDE/GROOM

  • Christina Wu Elegance
  • La Femme Evening
  • MGNY for Morilee
  • Montage

CLEARANCE

  • Sale Gowns and Dresses

More Styles

  • Prom Dresses
  • Glitter Fabric
  • Bridal Gowns
  • Ballgowns
  • Beaded/Sequin
  • High-Low
  • Jumpsuits/Pants (Online Only)
  • Lace
  • Mermaid
  • Plain
  • Prints
  • Plus Sizes
  • Pageant
  • Semi-Formal
  • Sleeves
  • Two-Piece