media_removed_toofab 102011

A new report out today claims Nicole Richie recently had a boob job -- and there may even be photos to prove it.

New pictures from her birthday vacation to Mexico over the weekend show a busty looking Nicole in a blue bikini -- looking curvier than she did just one year ago (right, in pink).

We hear the mother-of-two didn't go under the knife, meaning her curves could just be the result of a great bathing suit, having kids or even a new diet.

Click the gallery above to see how Nicole has changed through the years -- and let us know what you think below!

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