After joining MTV News' Sway live in Seattle to [article id="1667615"]announce the nominations[/article] for the 2011 MTV Video Music Awards on Wednesday night, [article id="1667618"]Katy Perry wasn't done celebrating[/article] her own nine nods. The California Gurl was one of several celebs who took to Twitter to express their joy over landing a VMA nomination.

Odd Future main man Tyler, the Creator, who surprised most by landing nominations for Best New Artist and Video of the Year, could barely contain his excitement, filling his Twitter feed with celebratory messages like, "This sh-- is crazy. Like, my goal life list is just being checked off. And I'm barely 20. What the f---!"

[article id="1667621"]Bruno Mars -- who is up for four Moonmen[/article] -- thanked MTV for his nods, and then gave props to "America's Best Dance Crew" troupe Poreotics, who appear in his nominated "Lazy Song" video.

Kreayshawn and Big Sean -- both of whom will face off against Tyler in the Best New Artist category -- also jumped on Twitter after learning they were nominated, "Omg! Nominated for best new artist for the VMAs! Fanatical fantastical!" Kreay wrote. And Sean chimed in with a succinct, "I'm nominated for the MTV VMA's! F--- yeah."

Elsewhere, multiple nominees Nicki Minaj and Chris Brown thanked fans for their support. Red-hot rapper Pitbull was counting the days until the big show, writing, "So excited to be nominated for a 2011 VMA I can't wait until Aug 28th for the Big Day #VMA."

The 28th annual MTV Video Music Awards will air live on Sunday, August 28, from the Nokia Theatre in Los Angeles at 9 p.m. ET/PT. See the list of nominees, revisit last year's highlights and vote for your favorites in the general categories by visiting VMA.MTV.com.