Good old Sienna Miller.

She's a fun-loving, sometimes nude gal who thinks there's nothing wrong with wearing no pants and having a good time. She also feels that human beings are basically a bunch of f*%king animals, so screw monogamy.

So it should come as no surprise that she's come to the defense of fellow hard-partying celebs Britney Spears and Lindsay Lohan. London's The Sun reports that Sienna attended no fewer than three BAFTA after parties and partied hard until 5:30 am Sunday night.

Then she is quoted in OK! Magazine as saying the hard-partying lifestyle is actually rather "healthy" and that Britney and Lindsay shouldn't be chastised.

"I think everyone's entitled to their own decisions," said Miller, who has been recently linked to Leonardo DiCaprio and Diddy. "Girls are doing the same thing all over the world as what these girls are doing, but they're not being photographed while they're doing it."

"I think it's healthy for young girls to go out and have fun in their teenage years and early twenties. I'm not going to judge anyone."

There you go. If troubled Miss USA Tara Conner is looking for a good role model, she can forget all about that blowhard Donald Trump. Sienna Miller doles out good advice!

After all, is there anyone among us who thinks girls in their teens and 20s shouldn't be going out and getting drunk all the time? We know Katie Rees sure doesn't.