"The O.C." actress Mischa Barton looked nearly unrecognizable while watching an L.A. Lakers game, but she ratcheted up the charm in a little black dress days later while bar hopping in the City of Angels.

The Mirror published snaps of the actress wearing a NY baseball cap and oversized gray sweater and tight jeans as she made her way to her courtside seat.

"The 29-year-old beauty looked so different we had to flash a double-take to make sure it was really her," it said. "But sure enough, behind those thick glasses and the bright blonde hair it really was Mischa."

Mischa Barton has been on the comeback trail following some rough patches. Last year, "The O.C." star's house in Beverly Hills was in danger of being foreclosed after she was months behind on mortgage.

"Barton just got slapped with a default notice -- obtained by TMZ -- informing her she's skipped more than 100 grand in payments ... triggering the foreclosure process," said TMZ.

"The crib is awesome -- 8 bedrooms, 11 baths, 3 guesthouses all on 1.2 acres. She bought it for $6.4M in 2005 -- when 'The O.C.' was a big deal, and took out a loan for $4.2 million."

"The show went off the air in 2007 -- and Mischa's been trying to unload the house since 2010 ... when she listed it for 8.695M, but no one bought it. She re-listed in 2011, and again ... no takers," it added.

Meanwhile, Mischa Barton looked a little more glamorous in a little black dress on Saturday while partying at the Variety and Formula E Hollywood Gala in iconic Chateau Marmont.

Daily Mail, which published photos of "The O.C." actress, wrote, "Mischa's blonde hair was worn down straight, with a few free strands tucked behind her ears to showcase her gorgeous face. Bare lips and a flawlessly applied coat of blush enhanced her natural beauty, as did a light coat of mascara."