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Size 10 Niecy Nash: “I’m the Biggest Girl” on DWTS

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Dancing With the Stars' Niecy Nash has embraced her jiggles.

"As a size 10, I'm the biggest girl in this competition," the actress, 40, and mom of three (son Dominic, 18, and daughters Donielle, 15, and Dia, 10, with ex Don Nash) tells "But I don't compare. I stay in my own lane."

PHOTOS: Before they were on DWTS

To whittle down her middle, "[My partner] Louis [Van Amstel] made me start doing Pilates at L.A.'s Winsor Pilates two to three times a week to strengthen," says the 5-foot-3 Clean House star, who's replacing fried foods with salads, fish and chicken (but won't quit chocolate!).

"It's a lot of core work," continues Nash, who loves to work out to "Bootylicious" by Destiny's Child. (She and Van Amstel received an 18 out of 30 for their Monday night dance to "La Bamba.")

PHOTOS: Stars who love their curves

Her efforts are paying off.

Boasts Nash, who's dating electrical engineer Jay Tucker, 43: "I just went to a fitting and  my gown had to be pulled in at the waist!"

To find out which DWTS competitor actually gained weight on the show and which one is afraid of losing her “boobs and butt,” pick up the newest issue of Us Weekly now!

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