A Melrose Avenue mainstay for more than a decade, Jigsaw is a trendy fashion boutique catering to gals size 0 to 6. Socialites, nymphs and young, skinny-but-beautiful 'rexy actresses flock here to check out its bountiful selection of maxi dresses (long, flowy numbers), Frankie B jeans, tight T-shirts, sweat suits, denim hot shorts (otherwise known as Daisy Dukes) and microminis. The store has an underlying '80s vibe, its walls lined by Marilyn Monroe and James Dean paintings by artist Steve Kaufman, the onetime assistant to the late Andy Warhol. Funky music pumps through the store and the sales clerks (every so often) get jiggy with it. Most popular among the Melrose Place–type shoppers are the tiny bikinis by Ashley Paige, hand-knit, two-piece numbers that look like they'd be snug on a Chihuahua — or Tori Spelling. In keeping with its theme of abnormally small, the fashionable boutique also sells a Michelle Obama favorite: a 14K gold necklace that features a teeny peace sign, cross or crown by designer Lena Wald. Clearly, a full-figured gal with a fleshy neck can't catch a break. 7449 Melrose Ave., Hlywd. (323) 653-5221.