Megan Fox strips off to just her bra and underwear in new This Is 40 movie trailer - OK! Magazine

#xa; Transformers star showed off her cleavage and flat tummy in the promo alongside Leslie Mann in the Knocked Up spin-off

Celebrities Intentionally Showing Their Underwear

The Most Daring Red Carpet Looks of All Time

Megan Fox's TV and Movie Roles: 'Transformers' to 'Bad Boys

Megan Fox's Incredible Body Over the Years

Selena Gomez Shows Off New Dirty Blonde Hairstyle: Photos

Cut Megan Fox scene from 'This Is 40' released

Megan Fox strips off to just her bra and underwear in new This Is 40 movie trailer - OK! Magazine

Megan Fox strips down to her bra and underwear in trailer for Judd Apatow's This Is 40

Megan Fox Avoids Wardrobe Malfunction in Mini Crop Top