Lo Bosworth: "American Idol" Top 24 Debut

Lo Bosworth arrives at Idol Prom: The "American Idol" Season Ten Top 24 Debut event at the Roosevelt Hotel on February 24, 2011 in Hollywood, California.

Credit: Zimbio

Photos by Michael Tullberg/Getty Images North America

Lindsay Lohan: Why I've Been Out So Late

Through Twitter, Lindsay Lohan has issued disclaimers when the paparazzi have caught her out in the wee hours at – or near – clubs.

Just what she's been doing post-rehab is important since the actress, 24, needs to put her best face forward in her ongoing court appearances for her grand theft case, stemming from the $2,500 necklace she's accused of stealing.

Already on probation in a DUI case, the last thing Lohan needs is for the judge to see her as an unreformed party girl. A violation of her probation could send her back to jail.

Lohan's nocturnal activities began on Grammy night when she attended a Nivea bash in Beverly Hills. "She didn't stay long at all, but the party started late at night," a source tells PEOPLE.

Lohan was next spotted leaving Hollywood's Roosevelt Hotel with Samantha Ronson after midnight Thursday.

She later Tweeted, "I was just at roosevelt to meet Samantha and say happy birthday to a friend. i take my sobriety seriously. please dont believe this accusations. i know the rules and i wouldnt risk probation."

Then on Friday night, Lohan hit up an NBA All Star party at Station Hollywood where a source says, "She arrived on the late side with an entourage of six."

The next night, Saturday, Lohan took in a show at Hollywood's Hotel Café where her pal Ferras performed.

After getting photographed again, she wasted no time Tweeting why she was out and about.

"Went to see my friend @ohferras perform and was talking to a future costar – just to be bombarded by paparazzi," Lohan wrote. "So much for being normal – im now winded and headed home."

Credit: PEOPLE (Dahvi Shira)

Lindsay Lohan Spotted At Nightclub With Ex-GF

Lindsay Lohan FINALLY went out to get her party on last night, following her ex-girlfriend Samantha Ronson to their old stomping grounds - Teddy's nightclub at the Roosevelt Hotel in Hollywood.

Linds arrived in her rented Porsche at 1:45 am to the parking lot of the hotel, looking for Sam. Our photographer tells us:

"It was like old Lindsay -- she was desperate to find Sam. She jumped out of her car and ran into the hotel all nervous and wired."

Then, whadaya know -- Lindsay emerges with Sam and the couple get into Sam's BMW to head home to their matching two-story homes by the beach. Why'd they ride together and leave Lindsay's luxury rental in the VIP spot at the Roosevelt? A source who was inside the hotel last night (this morning) tells us:

"Lindsay didn't seem straight. She didn't need to be behind the wheel and Sam always takes car of Lindsay no matter what. Even though they aren't officially dating right now, Sam feels a responsibility for Lindsay so she told Lindsay she'd drive her home. Sam definitely feels like Lindsay is clinging and kind of stalking, but Sam loves her regardless and will always be there for her."

After jail time, a stint in rehab and now another threat of time behind bars, why isn't Lindsay ready to settle down and quit her wild ways?

Credit: X17 Online