I love her harmonies!! I think Ariana learned from the best, having listened to the likes of artists like Brandy whom she cites as an inspiration. It's one of the things I most look forward to when I hear new Ari songs (or any song for that matter), the harmonies!!
Her harmonies are always beautiful. My favorite are the ones she does on the second verse of Break Free. She sings them out during her live performances, and it's always GLORIOUS
And it reminds me of Break Free too 
