Lindsay Lohan continues to have a blast in Cannes! Michael Jr. last night. Dressed in a short black dress and pink heels, Lindsay was the life of the party as she danced, laughed and let loose with her 25-year-old bro. The Mean Girls star even hit the DJ booth at one point and looked like she was having the time of her life. LiLo posted a sexy selfie of herself before her night out. “@saintlaurentparis #living #cannesfilmfestival #VIPROOM après Cavalli #youcansitwithus,” she captioned the snapshot. Despite the fun night of partying, a source tells E! News Lindsay was not drinking during her night out and was sober the whole time. Instead of alcohol, she sipped Red Bull the whole night.