According to sources, Britney Spears is set to release the music video for “If You Seek Amy” on Thursday. The video will make it’s debut on Britney.com and it’s said to be really sexay!

The video will premiere on March 12th at 11am EST. A source says of the video, “Saw a rough cut of the IUSA video. It’s sooooo hot. She looks amazing – like Britney ‘Slave 4 U.’”

Nice. Can’t wait to check it out.

To tide us over until then, here’s Britney singing “If U Seek Amy” in Tampa, Florida, yesterday.

After performing “Toxic” at the same show, Britney performed “Baby One More Time”. It sounds like the fans were loving the concert by the sound of the arena filled with people singing along.

Also, here’s a snippet of Britney performing “Do Somethin” at the same show. She’s seen wearing a gold one-piece outfit and sunglasses.

Also at the Tampa concert, Britney performed “Freakshow”: