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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

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215.702.8586

OXFORD VALLEY MALL

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    • Overview
    • Aleta
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    • 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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    • Sherri Hill
    • 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
    • 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
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    • Sherri Hill Cocktail
    • 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:
La Femme Short Dresses 18177

18177 La Femme Short Dresses

$298  
IN STOCK*
La Femme Short Dresses 20429

20429 La Femme Short Dresses

$398  
IN STOCK*
La Femme Short Dresses 19716

19716 La Femme Short Dresses

$350  
IN STOCK*
La Femme Short Dresses 16541

16541 La Femme Short Dresses

$298  
IN STOCK*
La Femme Short Dresses 20204

20204 La Femme Short Dresses

$398  
IN STOCK*
La Femme Short Dresses 23467

23467 La Femme Short Dresses

$278  
IN STOCK*
La Femme Short Dresses 21951

21951 La Femme Short Dresses

$238  
IN STOCK*
La Femme Short Dresses 22009

22009 La Femme Short Dresses

$278  
IN STOCK*
La Femme Short Dresses 22102

22102 La Femme Short Dresses

$218  
IN STOCK*
La Femme Short Dresses 21081

21081 La Femme Short Dresses

$378  
IN STOCK*
La Femme Short Dresses 21284

21284 La Femme Short Dresses

$358  
IN STOCK*
La Femme Short Dresses 21388

21388 La Femme Short Dresses

$350  
IN STOCK*
La Femme Short Dresses 20564

20564 La Femme Short Dresses

$398  
IN STOCK*
La Femme Short Dresses 20676

20676 La Femme Short Dresses

$398  
IN STOCK*
La Femme Short Dresses 19436

19436 La Femme Short Dresses

$298  
IN STOCK*
La Femme Short Dresses 19250

19250 La Femme Short Dresses

$318  
IN STOCK*
La Femme Short Dresses 19811

19811 La Femme Short Dresses

$378  
IN STOCK*
La Femme Short Dresses 17902

17902 La Femme Short Dresses

$298  
IN STOCK*
La Femme Short Dresses 21885

21885 La Femme Short Dresses

$278  
IN STOCK*
La Femme Short Dresses 21935

21935 La Femme Short Dresses

$258  
IN STOCK*
La Femme Short Dresses 21987

21987 La Femme Short Dresses

$298  
IN STOCK*
La Femme Short Dresses 22045

22045 La Femme Short Dresses

$278  
IN STOCK*
La Femme Short Dresses 22081

22081 La Femme Short Dresses

$238  
IN STOCK*
La Femme Short Dresses 20591

20591 La Femme Short Dresses

$450  
IN STOCK*
La Femme Short Dresses 20618

20618 La Femme Short Dresses

$358  
IN STOCK*
La Femme Short Dresses 19430

19430 La Femme Short Dresses

$278  
IN STOCK*
La Femme Short Dresses 20133

20133 La Femme Short Dresses

$350  
IN STOCK*
La Femme Short Dresses 15853

15853 La Femme Short Dresses

$218  
IN STOCK*
La Femme Short Dresses 20247

20247 La Femme Short Dresses

$398  
IN STOCK*
La Femme Short Dresses 23385

23385 La Femme Short Dresses

$378  
IN STOCK*
La Femme Short Dresses 21991

21991 La Femme Short Dresses

$338  
IN STOCK*
La Femme Short Dresses 22638

22638 La Femme Short Dresses

$298  
IN STOCK*
La Femme Short Dresses 21872

21872 La Femme Short Dresses

$338  
IN STOCK*
La Femme Short Dresses 22083

22083 La Femme Short Dresses

$278  
IN STOCK*
La Femme Short Dresses 22101

22101 La Femme Short Dresses

$278  
IN STOCK*
La Femme Short Dresses 20632

20632 La Femme Short Dresses

$358  
IN STOCK*
La Femme Short Dresses 19750

19750 La Femme Short Dresses

$450  
IN STOCK*
La Femme Short Dresses 19461

19461 La Femme Short Dresses

$358  
IN STOCK*
La Femme Short Dresses 19482

19482 La Femme Short Dresses

$298  
IN STOCK*
La Femme Short Dresses 23254

23254 La Femme Short Dresses

$238  
IN STOCK*
La Femme Short Dresses 22961

22961 La Femme Short Dresses

$350  
IN STOCK*
La Femme Short Dresses 22061

22061 La Femme Short Dresses

$378  
IN STOCK*
La Femme Short Dresses 21117

21117 La Femme Short Dresses

$398  
IN STOCK*
La Femme Short Dresses 21202

21202 La Femme Short Dresses

$398  
IN STOCK*
La Femme Short Dresses 21244

21244 La Femme Short Dresses

$398  
IN STOCK*
La Femme Short Dresses 20531

20531 La Femme Short Dresses

$318  
IN STOCK*
La Femme Short Dresses 19470

19470 La Femme Short Dresses

$338  
IN STOCK*
La Femme Short Dresses 19473

19473 La Femme Short Dresses

$338  
IN STOCK*
La Femme Short Dresses 20244

20244 La Femme Short Dresses

$498  
IN STOCK*
Jovani Short & Cocktail 88031

88031 Jovani Short & Cocktail

$550  
IN STOCK*
Jovani Short & Cocktail 93146

93146 Jovani Short & Cocktail

$500  
IN STOCK*
Jovani Short & Cocktail 42808

42808 Jovani Short & Cocktail

$480  
IN STOCK*
La Femme Cocktail 20721

20721 La Femme Cocktail

$298  
IN STOCK*
Jovani Short & Cocktail 20472

20472 Jovani Short & Cocktail

$578  
IN STOCK*
Jovani Short & Cocktail 73650

73650 Jovani Short & Cocktail

$420  
IN STOCK*
Jovani Short & Cocktail 74207

74207 Jovani Short & Cocktail

$368  
IN STOCK*
La Femme Cocktail 19431

19431 La Femme Cocktail

$278  
IN STOCK*
La Femme Cocktail 17649

17649 La Femme Cocktail

$198  
IN STOCK*
La Femme Cocktail 18445

18445 La Femme Cocktail

$398  
IN STOCK*
La Femme Cocktail 18162

18162 La Femme Cocktail

$250  
IN STOCK*
La Femme Cocktail 18697

18697 La Femme Cocktail

$278  
IN STOCK*
La Femme Cocktail 18236

18236 La Femme Cocktail

$198  
IN STOCK*
La Femme Cocktail 18110

18110 La Femme Cocktail

$338  
IN STOCK*
La Femme Cocktail 18124

18124 La Femme Cocktail

$278  
IN STOCK*
La Femme Cocktail 18418

18418 La Femme Cocktail

$278  
IN STOCK*
La Femme Cocktail 19423

19423 La Femme Cocktail

$398  
IN STOCK*
La Femme Cocktail 19096

19096 La Femme Cocktail

$318  
IN STOCK*
La Femme Cocktail 16503

16503 La Femme Cocktail

$278  
IN STOCK*
La Femme Cocktail 18449

18449 La Femme Cocktail

$250  
IN STOCK*
La Femme Cocktail 17136

17136 La Femme Cocktail

$338  
IN STOCK*
La Femme Cocktail 19503

19503 La Femme Cocktail

$398  
IN STOCK*
La Femme Cocktail 19521

19521 La Femme Cocktail

$318  
IN STOCK*
La Femme Cocktail 17107

17107 La Femme Cocktail

$378  
IN STOCK*
Twelve by Mac Duggal 3464T

3464T Twelve by Mac Duggal

$318  
Claudine for Alyce Special Occasion 2233, V1643-02

2233, V1643-02 Claudine for Alyce Special Occasion

$258  
Jasz Couture Short Dresses 4236

4236 Jasz Couture Short Dresses

$178  
Jasz Couture Short Dresses 4208

4208 Jasz Couture Short Dresses

$158  
Jasz Couture Short Dresses 4235

4235 Jasz Couture Short Dresses

$258  
Jasz Couture Short Dresses 4222

4222 Jasz Couture Short Dresses

$178  
 10398

10398

$140  
 17152

17152

$450  
 4425

4425

$200  
XO Exclusive S2290

S2290 XO Exclusive

$160  
XO Exclusive XO7013s

XO7013s XO Exclusive

$350  
XO Exclusive XO7020s

XO7020s XO Exclusive

$200  
XO Exclusive XO5099s

XO5099s XO Exclusive

$200  
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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
  • QuinceaƱera
  • 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