Britney Spears opened up about how ‘bittersweet’ it is to see her children grow up.The Circus singer, 39, shares two sons with ex-husband Kevin Federline, Sean Preston, 16, and Jayden James, 15.Taking to Instagram, the star couldn’t help but take us all down memory lane as she shared throwback pap shots from a beach getaway when her sons were much younger.Alongside the upload, she penned: ‘So bittersweet to see them get older … why can’t they just stay babies forever??? ‘They will always be MINE!!!!!’Fans quickly flooded the post with love for the family.One commented: ‘I love how you watch for them, you are a freaking lioness mamma!’Another agreed: ‘Boys love their mamas so much.
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