Lindsay Lohan's sense of humor is still intact after completing a 90-day stint in rehab. The 27-year-old actress guest hosts Chelsea Handler's show Chelsea Lately on Monday, Aug. 5. In a sneak peek video, Lohan, looking good in a black ensemble and her signature red locks, pokes fun at One Direction singer Harry Styles, 19, during a round table discussion.

"Harry Styles is on the cover of British GQ, he was questioned by the interviewer about rumors that he's bisexual with a DJ named Nick . . . I've been there," she joked. (Lohan dated British DJ Samantha Ronson in 2010 for 16 months. "It kind of just happened with Samantha," she told the UK Sun of her ex-girlfriend in February 2010. "She's the only woman I've been attracted to.")

"Harry answered, 'We're just friends,'" Lohan continued on the Chelsea Lately. "When asked how many people he's slept with he said, 'Yes, lower than 50. You're cornering me, I've only ever had sex with two people.'"

"He's obviously not counting oral," the Mean Girls star quipped. "Sorry, Harry!"

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Lohan's guest host gig on Chelsea Lately marks her first television appearance since leaving rehab on July 30. After she left Cliffside Malibu Rehab Center, Judge James R. Dabney ruled that she must complete an additional 15 months of psychological therapy. 

Watch the sneak peek video above. Lohan's appearance on Chelsea Lately premieres Aug. 5 at 11:00 EST on E!.

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