Britney Spears spent yesterday afternoon in LA hanging out with her sons, Sean and Jayden, running errands around town. The threesome stopped by Petco with their pup and later dropped in at a Coffee Bean & Tea Leaf. This morning, Britney was up bright and early to call into Ryan Seacrest's morning show for the world premiere of "Scream & Shout," her new single. Brit collaborated on the track with Will.i.am, and told Ryan, "When you hear this in the club, you will turn it up!" There's no word on whether or not Britney's planning to perform the single live on The X Factor, though she did already shoot the video with Will.i.am.