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Britney Spears
spent the weekend with her boys.

The singer was spotted in Santa Barbara on Saturday, where she hit the beach with sons Sean Preston, 7, and Jayden James, 6. It's crazy how big they've grown!

Sporting short shorts and her new brunette 'do, Brit Brit was even seen burying both of her sons -- who were wearing matching wetsuit tops -- in the sand.

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And while it looks like a pretty relaxing afternoon for one of the Spears girls, Britney's sister broke some pretty exciting news of her own this weekend.

The 21-year-old announced she's engaged to 30-year-old boyfriend Jamie Watson. The two have been dating for three years -- click here to see the ring!

And see more cute celebrity kids in the gallery above.

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