Britney Spears ’ sons wanna scream and shout for one of their own.

The “Gimme More” singer’s kids Sean Preston , 20, and Jayden James , 19—whom she shares with ex-husband Kevin Federline —made a rare appearance to cheer on their cousin Maddie Watson , 17, as she competed in a high school baseball game.

In a photo shared on Instagram Sept. 17, Maddie—whose mom is Britney’s sister Jamie Lynn Spears and dad is Casey Aldridge —posed in her athletic gear with her right arm in a black sling. She was joined by Britney's sons as well as her sister Ivey Watson , 7, whom Jamie Lynn shares with husband Jamie Watson .

For the leisurely outing, Sean kept it casual in a fitted white T-shirt and baggy dark wash jeans with a pair of headphones around his neck. Jayden opted for a s

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