Sienna Miller Bikini Pictures Are Something Different

What's going on here? There's something odd about these Sienna Miller bikini pictures, but I can't quite figure out what it is. We've seen her on a boat before, and we've seen her smoking. So it can't be that. Her hair is pretty much the same as always, and it's not like she's put on weight. So what could it be? Oh, right... Sienna Miller isn't topless for once.

On another note, doesn't it look like Sienna Miller has a nipple ring in the top picture?

More Sienna Miller bikini pictures after the jump. Also different is the fact that Sienna Miller isn't having sex with Balthazar Getty either.

Photo credit: Flynet