The Biggest Loser host flaunts her toned physique in a tiny two-piece Alison Sweeney ... on the cover of Shape magazine’s April issue, rocking a teeny blue two-piece. Sweeney, 35, admits inside ...

Alison Sweeney probably never imagined she'd end ... they see," the "Biggest Loser" hosts says in the April issue of Shape magazine, which features the mom of two posing in a string bikini ...

Alison Sweeney (Sami, DAYS) graces the cover of Shape magazine this month for the second time, in a teeny red bikini. "I've gotten such an amazing response to the cover already," she enthuses.