It's nice to see there's no sibling rivalry between Lindsay Lohan and her sister Ali but then again, maybe their togetherness shouldn't include bringing underage Ali into LA clubs!

For the second time in a week the sisters hit the nightlife together; Friday night RadarOnline.com spotted them at Teddy's, which was packed with star power. And while Lindsay hung for most of the night with Ali, things quickly changed when they bumped into Jason Segel.

Click Here To See Photos Of Jason And Lindsay At The End Of A Long Night.

Both Lindsay and Ali were dressed for attention, with Lindsay wearing a tight jumper and lots of makeup. Ali wore a vest as a shirt and booty shorts.

Click here to see Lindsay in a white bikini at the Sunset Marquis Hotel pool this summer.

The sisters danced wildly and when they came off the dance floor Lindsay was chainsmoking inside the lounge, a definite no-no. But like a good big sis, Lindsay took Ali and introduced her to various promoters who were in the club. (No one said, "Hey,  you're 16, how'd you get in here?" Ok, we did, but nobody answered.)

Click here to see photos of Lindsay celebrating her birthday earlier this year.

The highlight of the night for Lindsay and Ali was when they bumped into Segel (Forgetting Sarah Marshall, Knocked Up, I Love You, Man). All we know is the Lohan sisters freaked out they were so excited, and told Jason he's "awesome" among other complimentary terms. Jason seemed a little embarrassed by the encounter but was gracious. And the night didn't end there for Lindsay and Jason. They left Teddy's and partied at Adam Levine's until nearly 6 a.m. when they were then spotted at the Chateau Marmont, with Jason getting out of the car.

Hmmm...new couple alert? Or just party pals?

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• TAGS
• Ali Lohan
• exclusive
• hollywood happenings
• lindsay lohan
• Teddy's

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