Dead Rising/Clothes Horse

To acquire the Clothes Horse achievement you must change into all clothes (and costumes) available in the mall. Some of the outfits are available in multiple stores, so you might not have to visit every store to get the achievement.

Shoekins

 * White dress shoes.
 * Black dress shoes;

Kids Choice Clothing

 * Horse head helmet.

Universe Of Optics

 * Small, round, red lensed, thin, black rimmed sunglasses.
 * Dark, sleek oblong lensed, thin, black rimmed sunglasses.
 * Clear, rounded-rectangle lensed, thin, black rimmed glasses.
 * Large, round lensed, thin, silver rimmed sunglasses (aviators).

SporTrance
Lower Level:
 * White trainers with red line and high white socks with red and blue stripes at the top.

Ye Old Toybox

 * Teddy Bear mask/helmet.

Tyke N' Tots

 * Green Ratman shirt and denim shorts.

Colby's Movieland
In the Toy Store:
 * Mega Man helmet.

Child's Play

 * Lego mask/helmet.

Tucci's of Rome

 * White and black singlet with bikini model and dark, pinstriped shorts.
 * Black baseball cap.

Cantonbury's

 * Black dress shoes with red socks.
 * Dark pork pie hat with light ribbon.
 * White business shirt with black tie and dark trousers.

Fanfare Fashion

 * Dark ladies business suit and white blouse.

Casual Gals

 * Short blue dress.

Small Fry Duds

 * Pink and black striped t-shirt and small pink denim shorts.

Homerunners

 * Black, one-piece wrestling leotard with white stripes.

Scuffs and Scrapes

 * Star-spangled blue shirt and short, red shorts.

Fine-Lady Cosmetics

 * Red hair.
 * Brown hair.

The Lens Zen
Same as other glasses store.

Modern Businessman

 * Green business suit, white shirt and green tie.

Lovely Fashion House

 * Black and red flowery summer dress.

Kokonutz Sports Town

 * Blue vest and khaki shorts.

Run Like The Wind

 * Orange chuck taylors.
 * Black trainers with red stripes.
 * White trainers with red stripes.
 * Black baseball cap.
 * Blue and white baseball cap.

Brand New U
Pink dress set

Eyes Like Us
Same as other glasses places

Rafael's Shoes
White dress shoes

black dress shoes w/purple'ish socks Only 2 things here that i have found

Nichol's Ladies Apparel
Pink and black flower dress

J.W.'s Sporting Goods
Fitting room- Black wrestling suit

Bare foot

Orange chucks

White shoes w/red stripes

black shoes w/red stripes (these shoes are really cool and are probably my favorite ones other then the megaman boots)

Refined Class
Black dress w/white blouse

Sports High
camo vest w/black shorts

Groimin
White dress w/ pink blouse

Space
34 jersey with plad shorts

Black Fedora hat

Fashion Fiesta
White lace dress

Distinguished Gentleman
White dress shoes

Brown coat black pants yellow shirt

Children's Castle
Goblin's mask( this is really cool!!!)