megan fox allure june 2010 cover

Megan Fox is Allure's June cover girl. Photo courtesy of Allure

Porcelain skin, piercing eyes, and oh, those lush lips!

Looking at Megan Fox's ethereal face gazing out from the June cover of Allure, it's hard to believe there was once a time when she wasn't exactly a beauty but a Bert. As in Ernie and Bert.

"I remember having that unibrow, which I always hated," Fox says of a1995 elementary school photo of herself in the magazine's style time line. "I used to beg my mother to let me pluck my eyebrows."

And talk about a transformer! The body of Emporio Armani Underwear now sports two neatly defined arches -- plus a few other assets that some allege have less to do with cosmetics than cosmetic surgery. But kittenish Fox, 24, remains coy on the subject.

"I would encourage anyone to first speak with a therapist, to try and figure out where this want comes from," she says of plastic surgery, "because a lot of times it's not related to your teeth or your nose or your chin -- the surgery is not going to alleviate that insecurity for you.

"If, then, you feel, This is something that I want to do, then do it. It's amazing that we have the technology to do the stuff that we do."

Yeah, yeah, but did she do it?

Referring to a 2002 shot of herself in the Allure's style time line, Fox says, "I will say for people who question the authenticity of my lips, you can clearly see that my lips are my lips."

megan fox allure june 2010 mint green fendi off-shoulder dress wavy hair

Looking foxy in Fendi. Photo courtesy of Allure

Though she sports a corset for her role as a prostitute in the Western thriller "Jonah Hex," Fox, who is dating actor Brian Austin Green, prefers to watch her figure by doing yoga and Pilates.

As for other beauty secrets, the tattooed temptress -- who models a Donna Karan cotton elasterell dress and Fendi silk crepe dress inside the magazine's pages -- claims she has none, except to say that you won't catch her bronzing her body at the beach.

Prepping for the "Transformers" sequel, "I had been tanning a lot so that Michael [Bay] would be happy with my skin tone," she says. "It's not going to happen again because of the damage and the possible skin cancer."

For more of Megan Fox in Allure, check out these behind-the-scenes shots from her cover shoot plus 11 beauty lessons the magazine learned from the actress.

In other Fox news, check out the star barefaced and shopping for cosmetics.