Both artists are also fans of working with other artists. Miley has collaborated with everyone from Britney Spears to RuPaul, and Ariana’s songs have featured Future, Missy Elliott, andNicki Minaj. 'Time' Announces 30 Most Influential Teens of 2016Check this out:Maddie Ziegler Poppy covered a spectrum of topics, from what kind of music Katy liked when she was a kid to the caliber of her hula-hooping and roller-skating skills to singing a sweet duet of Katy's track, "Firework." Another question on Poppy's fashion-conscious mind: HowdoesKaty pick out her kooky outfits (or even, um,lack of outfits)? Representative Castro smuggled in a phone where hefilmed a group of women