How did Ariana Grande celebrate her 21st birthday? Thu-26-Jun-14 18:29 Share this By Steph Monks The babe that is Ariana Grande turned 21 today. And to celebrate, her and her mates had a day out at Disney World! She tweeted, 'Spending my last few days as a non 21 year old in one of my favorite childhood places with my favorite people.’ She even dressed in a Minnie Mouse-inspired outfit. spending my last few days as a non 21 year old in one of my favorite childhood places with my favorite people 👩🎂🌌 pic.twitter.com/LOeHSh9YBB— Ariana Grande (@ArianaGrande) June 25, 2014 You May Also Like Ariana Grande releases steamy retro styled video for 'Problem' Ariana Grande breaks free all the way into space in new music vid Jessie J, Nicki Minaj & Ariana Grande team up Become a fan of The Edge on Facebook and on Twitter .