Ariana Grande - finding shelter dogs their forever homes on her Honeymoon tour
Perrie Edwards (Little Mix) - dealing with a very public split so professionally
Miley Cyrus - MAC Viva Glam AIDS campaign and her Happy Hippie Foundation
Lady Gaga - Born This Way foundation and for encouraging conversations about sexual assault ('Till It Happens To You')
Taylor Swift - defending her Spotify move, Swiftmas, and donating $50,000 to New York Public Schools from 'Welcome To New York' sales
Fifth Harmony - becoming ambassadors for anti-bullying organisation Cybersmile
Other