Pop star Ariana Grande harked back to her childhood on Tuesday (24Jun14) by celebrating her 21st birthday at Disney World in Florida.

The actress/singer proved she is still young at heart with a trip to the Walt Disney World Resort theme park in Orlando.

Grande posed for snaps wearing a pair of iconic 'Minnie Mouse ears' alongside staff members dressed as Cinderella and Prince Charming.

She also met Disney's main character, Mickey Mouse, and was pictured planting a kiss on his nose.

During her visit, she tweeted: "Spending my last few days as a non 21 year old in one of my favourite childhood places with my favourite people."

Grande will turn 21 on Thursday (26Jun14).