Britney quietly celebrated her 26th birthday with close friends at the Scandinavian Mansion of Style. (Wow. Been a while since we’ve used “quietly” and “Britney” in one sentence.)

She did go to a wild party just hours before, even meeting up with fellow trainwreck Paris Hilton, but slipped out — with no crotch flashing or DUI slip-ups the whole evening — for her birthday celebrations.

Wow, Britney. Just turned 26 and you’re more mature already.