Britney's Boys are Pumpkin Pickers!

Kevin Federline takes sons Sean Preston and Jayden James to the Pierce College Pumpkin Patch in Los Angelens on Thursday (October 29).

Sean, 4, and Jayden, 3, had a blast climbing stacks of hay, yelling, “I’m the king of the world!” and riding on the miniature train ride at the pumpkin patch. Can’t believe how big they’re getting and how much they look like Britney!

Mama Brit released her “3″ video today and will head back out on tour in Australia. She kicks things off November 6 in Perth.

10+ pictures inside of Sean Preston and Jayden James pumpkin pickin’…