Rumer Has It: Willis Defends Pal Lindsay Lohan

The perplexing Rumer Willis, the eldest daughter of Bruce Willis and Demi Moore, is remaining by pal Lindsay Lohan's side as the troubled star deals with rehab and DUI charges.

"I haven't talked to her, but I wish her the best," Rumer Willis, 18, told People at Thursday's BlackBerry Curve launch party in L.A.

"I think there a lot of people that are supporting her. It's been kind of a crazy week, figuring it out, and figuring out a better way to be."

Lindsay Lohan was arrested for DUI after her Mercedes crashed in Beverly Hills around 5:30 Saturday morning. Police said they found a substance they believed to be cocaine in her car.

Lindsay Lohan checked into rehab on Monday.

Rumer Willis, who has been photographed around L.A. with Lohan, says the struggling actress's age, 20, should be taken into consideration.

"I think it's definitely hard growing up in L.A. with all of the things that you have to deal with, and being so young," Willis said. "I think sometimes people don't realize the amount of pressure that can come."

So she's saying the pressure is so great that a star must often exhibit ridiculous, illegal behavior. Or at least the kind of thing seen in these Rumer Willis photos.

Rumer Willis had nothing to say one way or the other about Calum Best, but she also approves of another important person in Lohan's life.

No, not Dina Lohan. DJ Samantha Ronson, who was photographed last weekend driving an apparently passed out drunk Lohan - and who has also been named by Lohan's father, Michael, as a bad influence.

"She's great, she's a really cool person," Willis said of Ronson. "She doesn't give a crap about what anybody else thinks about her, which I really respect."

Rumer, we recommend you stick to hanging out with Hayden Panettiere. Not only because she's hot, but because she appears to have her head on straight.