Rihanna: The Video of the Year winner — debuting a newly cropped hairstyle — wore a custom Adam Selman dress, Neil Lane earrings and Jacqui Aiche rings.
Taylor Swift: The “Mean” crooner looked sleek in a J. Mendel suit and top, Tom Ford shoes and Lorraine Schwartz jewels.
Niki Minaj: The sartorial standout donned a bright yellow wig and sheer, bejeweled Versace jumpsuit for her big night — she took home the “Best Female Video” Moonman!
Katy Perry: Eat your heart out, Russell Brand! The “Part of Me” singer stunned in a teal and fuschia sequin embroidered Elie Saab gown.
Emma Watson: Hermione who? The Perks of Being a Wallflower star looked ultra-glam in a graphic, printed mini-dress
Rashida Jones: The Celeste and Jesse Forever actress stunned in a low-cut black leather dress and Neil Lane Jewelry.
Demi Lovato: A little bit rock-and-roll! The X Factor judge added some edge to a flirty, sparkly black frock by accessorizing her look with a studded leather bomber jacket.
Miley Cyrus: The freshly shorn future Mrs. Hemsworth looked edgy in a black silk organza Emilio Pucci gown and an Edie Parker clutch.
Alicia Keys: The R&B singer glowed in a curve-hugging Alexandre Vauthier gown, strappy Gucci shoes and Loree Rodkin jewels.
Kat Graham: The Vampire Diaries actress stunned in a satin maroon pantsuit, leopard print bustier and Ruthie Davis pumps.
Rita Ora: The British songstress rocked an Emilio Pucci jumpsuit, Sergio Rossi pumps, and carried a Jimmy Choo clutch.
Zoe Saldana: The Words star showed off her stems in a Salvatore Ferragamo frock and shoes; she accessorized with an Alexander McQueen clutch.
One Direction: The adorable British boy banders walked the red carpet just a few minutes before snagging their first Moonman ever — thanks to their “Most Share-Worthy Video” Award.
Wiz Khalifa & Amber Rose: With her fiance by her side, the proud mama-to-be showed off her burgeoning baby bump in a formfitting nude gown boasting black floral appliques. (She accessorized with Neil Lane jewelry.)
The Wanted: The U.K.-bred rockers struck a pose before taking their seats inside L.A.’s Staples Center.
The Fierce Five: Team USA’s McKayla Maroney, Jordyn Wieber, Kyla Ross, Gabby Douglas and Aly Raisman posed like pros.
The Extra correspondent looked sexy in short black leather dress.
Check out more here