Selena Gomez, who just celebrated her 31st birthday, is winning on all professional fronts

Selena Gomez celebrated her 31st birthday this weekend. There was a party for her at a private residence in Malibu that was covered by Vogue and included celebrities like Christina Aguilera, Karol G, Diplo, Saweetie, and Paris Hilton.  And there was also a private screening of Barbie with family and...