Breaking news, celebrity gossip followers: Lindsay Lohan was spotted this weekend partying!

No, really. It's true.

The troubled star continued her Samantha Ronson-inspired, post break-up downward spiral by hitting a party in the Hollywood Hills at 1:45 a.m. Saturday morning

Lindsay was accompanied to the shindog by five guys, including her longtime friend - and possible rebound? - Patrick Aufdenkamp.

According to one witness at the party:

"People were pouring vodka into her red party cup all night. She was way beyond incoherent. She was totally smashed and couldn't even form a sentence. She looked so lonely and lost."

According to OK!, Lohan remained at the event until just before 3 a.m. She then moved on to her next pre-dawn party.

** Update: Lindsay told E! News that she was not downing alcohol. "I was drinking something called Neuro Bliss," she said, referring to a health drink whose website says it's "proven to relax neural tissues, and to enhance brain activity, focus and provide a sense of well-being."

Turning to a special substance for a sense of well-being? Sounds right up Lindsay's alley!