Childhood snaps show Megan Fox aged 12 wearing braces... and combing eyebrows with a toothbrush

Now the world knows where Megan Fox's Hollywood smile came from.
The actress is seen here as a cute 12-year-old with a set of Ugly Betty-style train track braces on.
In other snaps the youngster is pictured experimenting with make-up.

Poised and polished: A 12-year-old Megan Fox combs her eyebrows with a toothbrush in a cute snap the actress has posted on her Facebook page

Hollywood smile under construction: In another snap the youngster is seen with Ugly Betty-style braces

And while Fox may be able to afford the best cosmetics these days, back in the day she was a little more resourceful, using a toothbrush to comb her eyebrows.

Megan posted the pictures on her Facebook account, encouraging her fans to check her out.
She wrote: 'Say hello to my 12 year old self.

Strike a pose: She also comments on her 'citrus/copper coloured highlights, writing: 'Thanks Sun-in'

'I encourage you to admire my citrus/copper colored highlights (thanks Sun-in!) my braces, and my ever present sunburn.'
She goes on: 'And yeah I'm brushing my eyebrows with a toothbrush in that one picture.'
Transformers star Megan, 26, is now in the throes of her first pregnancy with husband Brian Austin Green.
The actress has still not officially confirmed the news - but her growing bump is doing all the talking.

Baby on the way: The pregnant actress is seen here on American Independence Day earlier this week with husband Brian Austin Green at Disneyland, California

How she's changed: Megan strikes a very Hollywood pose at the Golden Globes last year