After the Laker game Friday night, Britney (sporting her cute wig/hat combo, blue contacts and bright white smile) went to hip LA eaterie the Bridge, for the second night in a row! An insider said the staff was "shocked" to see her there again (without a reservation) but that Brit looked happy and sober as she sipped on a water with lime. Guess the restaurant wasn't "happening" enough for her, though, cuz she left after only 20 minutes!

We're hearing rumors that Britney jetted off to Vegas yesterday for some shopping at Caeser's Palace and might have spent the night in Sin City. Stay tuned for more on that coming soon!