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What is Oksana Grigorieva‘s secret?  She just had a baby on Nov. 2, 2009, and not even three months later she is back to being super-duper skinny!

Mel Gibson and his girlfriend Oksana went to the premiere of The Edge Of Darkness in Los Angeles on Jan. 26, and his baby-mama looked teeeeny tiny!

Oksana gave birth to baby Lucia on Nov. 2, 2009 in Los Angeles, making the little one Mel’s eight child. How did she do it? Maybe she got some tips from super model mama Heidi Klum? —Corynne Steindler

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