Britney's Boo Boos Get Their Own Padded Room

Posted Sep 14th 2008 9:31AM by TMZ Staff

They grow up so fast -- Britney and Jamie Lynn, that is.

Jamie Lynn and baby Maddie showed up for Britney's joint birthday party for Jayden James (2) and Sean Preston (3) yesterday -- where Brit and her "weave you see from space" watched the kiddies play in an inflatable jumper.

Brings back memories.