@Getaway: Wishing @selenagomez a supercharged 21st birthday! #Getaway   @ashley_cook: happy birthday to my very best! no one deserves celebrating more than you. we are going to make 21 one that you will never forget! MuchMusic: Who giv...

@pmdeleon22: Happy birthday to my beautiful cousin but who’s more like a sister. The one who knows me best. We’ve been through a lot together from Barbie cars to private planes from dressing up and having nana record us to music video set...

@chaelynne: Happy happy happy happy happy happy happy happy happy happy happy happy happy happy happy happy happy happy happy happy happy (that’s 21 happy’s) birthday, my soul sister… 🎉🎈🍕🍷👯 ...

@paulinalautner1: Happy 21st Birthday @selenagomez #partying #21baby   @therealfrancia: My lil sis is finally 21!!! You know what that means….. Taco cake! #turnup   @itsashbenzo: Happy 21st birthday baby !!!! @selenagomez   ...

charmladonna: We out here!!! #starsdance #rehearsal #turnup a_juhhh: ratchet rehearsal pics! #selenagomez #starsdancetour ashleycinqmars: Our poses though 😂 #rehearsal #starsdancetour   //Johanna ...