The rumors about her may run rampant, but Lindsay Lohan can find comfort in her biggest defender, little sis Ali. “She really is just a great big sister and loves family. She’s my best friend. I talk to her as much as possible, sometimes every day,” 15-year-old Ali told In Touch about her starlet sibling at the Fall 2009 launch of Charlotte Russe at the Openhouse Gallery in New York on July 15. The aspiring actress/singer, who is reportedly slated to star in the fantasy flick Troll, also turns to media darling Lindsay for advice on how to survive the spotlight. “It's hard to have to deal with so many rumors, but she's told me to just to ignore it and just be true to myself. That’s what I try to do,” Ali added at the fashionable fete, which was also attended by Stephanie Pratt, Michelle Trachtenberg, Rumer Willis and Lohan matriarch Dina.