Fergie stripped down to her itsy bitsy bikini for beauty bible Allure's July covershoot and spilled a few of her top beauty secrets...

It takes one brave girl to flash the flesh on the front cover of a magazine, but Fergie's bionic bikini bod is looking so hot that we can understand why she's so confident!

Fergie reveals how she stays in shape on tour, how she plumped up for her movie role and her marriage to actor Josh Duhamel...

Fergie revealed how she keeps her killer body and avoids getting lazy on tour. She said: "I need structure. I need to get enough sleep. I need to make sure that I'm having regular workouts, and that they put in time for hair and make-up and nails, because I do have to get my nails done."

"I have to get my roots touched up and get facials, because when you're traveling, the skin doesn't look as nice," she added.

She also told Allure about ditching her daily fitness regime and swapping it for buckets of chicken to bulk up for her role in last year's film Nine, alongside Penelope Cruz.

She admitted that she and Penelope ate "everything fried and full of fat and salty...we were eating our brains out."  We bet fitness freak Fergie was crying into her BigMac!

Do you think Fergie looks incredible on the cover? Would you wear her revealing Wonder Woman swimwear on the beach?