Rihanna has been getting thicker - but now she's officially crossed a threshold. Social media is now proclaiming that she officially has a "big booty."

Pics of Rihanna celebrating Halloween in London are making their way across the internet. And Rihanna looks great in the pics.

The Bajan beauty has been growing into her figure now for a few years. And she's finally gotten to a level of "thickness" that is bringing her even more fans.

The hashtag #Thickanna has been trending online ever since the pics were released.

Here is the new THICK-ANNA:

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