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.

Men's Storehouse
Fitting room:
 * White dress shirt with tie on right-hand side.
 * Brown shirt with red tie and brown pants on left-hand side.

Rafael's Shoes

 * White dress shoes.
 * Black dress shoes with purple socks.

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 with red stripes.
 * Black shoes with red stripes.

Refined Class

 * Black dress with white blouse.

Sports High

 * Camouflage vest with black shorts.

Groimin

 * White dress with pink blouse.

Space

 * 34 jersey with plaid shorts.
 * Black Fedora hat.

Fashion Fiesta

 * White lace dress.

Distinguished Gentleman

 * White dress shoes.
 * Brown coat, black pants, yellow shirt.

Gramma's Kids
Fitting room:
 * Rat man shirt with shorts.

Children's Castle

 * Goblin's mask.

Fine Lady Cosmetics

 * Black hair on the right-hand side.
 * Grey hair on the left-hand side.

Modern Businessman
Fitting room:
 * White suite with dark shirt and striped tie.

Star Sporting Goods
Fitting room:
 * USA shirt with shorts.

Women's Lib
Fitting room:
 * Purple dress.

Wallington's
Left-hand side when walking into store:
 * Black striped dress suit with white shirt and black-and-white striped tie.

Jamming Juvenile
Center display when walking into store:
 * Rat man shirt with blue jean shorts.

Ladies' Space
Fitting room:
 * White dress with blue and brown flowers.

The Shoehorn
Right-hand side of store, also on the front- and middle-left-side:
 * White dress shoes.

Right-hand side of store, also on the back-left-side:
 * Black dress shoes with purple socks.

In The Closet
Fitting room:
 * Bikini girl shirt with black shorts.
 * Fedora of some color.
 * Blue and white baseball cap.

Outta Sight
See Universe Of Optics.

Kathy's Boutique
Fitting room:
 * Pink and black flower dress.