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Space monster. Astronaut Lady Gaga unveils Volantis, the world's first flying dress, on Nov. 10 in New York

Lady Gaga | GRAMMY.com

Call it glitter pop. Lady Gaga glistens in pink on March 24 in New York

Lady Gaga | GRAMMY.com

Spotted: Lady Gaga wears her best "Poker Face" and pink fur on Feb. 18 in New York

Lady Gaga | GRAMMY.com

Lady Gaga | GRAMMY.com

Lady Gaga | GRAMMY.com

Imagine Dragons' Dan Reynolds is "On Top Of The World" during a performance on Nov. 25 in London

Adam Lambert wows at the World Of Wonder's Wowie Awards on Dec. 12 in Universal City, Calif.

No Doubt / Gwen Stefani

Imagine Dragons | On Top Of The World

Designers Jonathan Ive and Marc Newson take U2's Bono for a spin in a red Fiat 600 Jolly before its put up for auction by Sotheby's (RED) Auction in New York on Nov. 21

A true diva brings her own fan. Mariah Carey cools off during an appearance on "Late Night With Jimmy Fallon" on Nov. 12 in New York

After postponing his Feb. 19 show for "health reasons," Justin Timberlake returns to the stage to rock Madison Square Garden on Feb. 20 in New York

Spotted: Rihanna wears something blue on Sept. 10 in London

He gives music a good name. Jon Bon Jovi lights up the stage during a performance with Bon Jovi on Dec. 12 in Perth, Australia

Disney royalty. Demi Lovato and Minnie Mouse have a magical time at Disneyland on Nov. 9 in Anaheim, Calif.

Ready to "Roar." Katy Perry and her cat ears arrive at Narita International Airport on Oct. 30 in Japan

Macklemore & Ryan Lewis backstage at "The GRAMMY Nominations Concert Live!! — Countdown To Music's Biggest Night" on Dec. 6 in Los Angeles

A bonafide colorful warrior. Ke$ha stands at attention at a Banana Republic L'Wren Scott Collection launch party on Nov. 19 in Los Angeles