Britney Spears' Awkward Meeting With Justin Timberlake...And His New Girl Jessica Biel

Britney Spears and Justin Timberlake were involuntary reunited at the Yatai Asian Tapas Bar in Hollywood on Monday night.

The former couple crossed paths as Justin dined with girlfriend Jessica Biel and Britney stepped out for a quiet meal with her mum Lynne.

"Jessica looked gorgeous," an onlooker told USmagazine.com, while Britney apparently "didn't look the best, but she probably thought no one would see her, as this restaurant isn't usually a hot spot."

The spy added, "Jessica and Justin looked to be slumping down in their seats to avoid [Britney].

"She left 30 minutes later. Shortly afterward, Justin and Jessica got in their car and left."

Sounds like a frosty reunion...

See Britney's men below