Did you notice something wrong with Britney's performance at the Billboard Music Awards over the weekend? If you did your not the only one. Britney Spears had two big appearances at last night's Billboard Music Awards—and "it wasn't good," said Matt Cherette for Gawker. The show opened with Rihanna performing her song "S&M", who was joined by Britney half-way through. "Spears lip-synced (Rihanna sang live), danced like she had arthritis, and even managed to mess up a song-ending pillow fight," commented Cherette.
The problems pleagued Spears when she later reappeared for a performance during Nicki Minaj's set. "And by 'performance,' I mean an even-worse-than-the-first-one cameo," Cherette said. Check out both performances here and see for yourself.