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X17! (Again!) That's right, folks - two X17 photogs had the privilege to spend some time with our girl Brit inside her Beverly Hills home last night!

Brit made the photographers leave their cameras at the door -- this was a private party! So no pix from inside, but here are some pictures taken before their big night began.

Meanwhile, Adnan tells our photogs he was in Santa Barbara this weekend -- but watch out, Addie -- the old adage works both ways ... while the cat's away, the Brit will play!

more pix inside ...