Lindsay Lohan Under Table, Letterman [PHOTOS & VIDEO]: 'The Canyons' Star Hides in Brazilian Night Club, Set for 'Late Show' April 9 Before Rehab

Rehab-bound Lindsay Lohan was spotted in a Sao Paolo, Brazil nightclub this Thursday. I use the word "spotted" because she was hiding under a table that night, making it hard to actually see her enjoying the club. Pictures of this under-the-table tactic were captured on Twitter. Also, on April 9, the 26-year-old is set to appear on "The Late Show with David Letterman," adding to her list of things to do before her 90-day rehab stint starting May 2.

Lohan was in Brazil to promote a clothing line, which she reportedly got paid $100,000 to do. Earlier in the evening as she entered the nightclub, she posed for pictures and waved to fans. Once she got into the club, however, her demeanor changed. According to the Twitter account user who posted the pictures of Lohan, the actress did not want to meet with the fans to take pictures. As you can see from the photo below, Lindsay is under the DJ booth surrounded by what it appears to be empty glasses, while holding her hand to her head while looking upset. There is an unidentified man kneeling down apparently talking to the Mean Girls star. Some believe that this is her new boyfriend, Avi Snow.

Here is a short interview clip featuring Lohan in Brazil.

Lindsay is still set to appear on "The Late Show with David Letterman" on April 9, and hopefully will not end up ducking under the host's desk if she becomes uncomfortable. Letterman is known for his no-nonsense attitude during his interviews, making sure his audience gets a good show, so maybe we will see him push Lindsay's buttons.

Apparently, Lohan also wants to head back into the recording studio to reboot her singing career as well.