Lindsay Lohan has been flirting dangerously with her past partying ways since her split from Samantha Ronson, and now it looks like she might be taking her sister, Ali Lohan, down with her.

Lindsay has reportedly been bringing Ali with her to parties around L.A., including a recent bash at the Roosevelt Hotel, where Lindsay was wary of photographers.

“Lindsay was definitely in party mode, but didn’t want anyone seeing her drink,” a source tells Page Six. Lindsay also recently brought 15-year-old Ali to 21-and-over club MyHouse, where the manager had to ask her to leave twice before she was escorted out.