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Megan Fox is over the moon about her new baby boy, Noah.

The hot mama couldn't help but swoon as she talked about her 2-month-old son at her first red carpet since giving birth in September, saying she's been flooded with emotion after she and hubby Brian Austin Green welcomed their first child.

"The whole thing has been overwhelming because I didn't realize you could love something so much, and I know people always say that but I love him so much it hurts, and it's an interesting feeling to have because I never felt that before," the Jonah Hex star said at the March of Dimes Celebration of Babies luncheon Friday in Los Angeles, which she attended with Green.

"But, he's getting to that place where he's smiling and he's almost ready to laugh, and I can't wait for that baby laugh that almost makes you feel like you can fly...like your heart's going to explode." 

Fox and Green tied the knot in 2010 and welcomed Noah on Sept. 7.