Lindsay Lohan has been bringing her 15-year-old sister Ali Lohan to various late-night events and clubs, leading some to wonder if Ali was really in good hands. Lindsay tells skeptics that Ali can handle the parties because "she's tougher than I am... She has a good head on her shoulders. Maybe it was different for me because I didn't know what to expect and it just happened really fast. I didn't have a big sister," Lindsay told Life & Style (via E! News.)