Notorious friender Cara Delevingne has a new gal pal ... Selena Gomez, who celebrated her 22nd birthday with Delevingne aboard a yacht in St. Tropez.
Forget posing for a pic with model Tanz Watson, if Selena really wants to make Justin Bieber jealous ... this is how you do it.
Selena Gomez & Cara Delevingne
Let's Be Friends
7/22/2014 8:29 AM PDT BY TMZ STAFF
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