Happy 26th, Selena Gomez!

Our favorite female pop star celebrated a year more than a quarter century on earth Sunday and her BFF Taylor Swift surprised her with a homemade cake ... albeit a long-distance social media photo of the cake, but still!

Selena was with other pals on her big day as a Grace VanderWaal Instagrammed a shot of the two of them and a crowd of friends surprising Selena with birthday cupcakes backstage at VanderWaal's LA show.



Meanwhile, where's Justin Bieber in all of this? Well, he'll probably stay away from wishing Selena a HBD on social media -- it'd cause waaaay too much trouble. But maybe he made a phone call to wish her a great day and to apologize for not proposing to her but instead, to Hailey Baldwin?