Ok, I just looked at a bunch of photos of Heidi Klum and this hairdo looked the most flattering on her to me. I like it parted on the side, better than in the middle.
And this is the one that I liked the best on Gwenyth Paltrow. I looked at a lot of photos of her and I think she looks better with a side part. The super straight ironed look with a center part looked way too harsh. I also like the more natural look on her, rather than the super-bleach blonde color with the dark roots (hated that actually LOL) So you could go for something like a longish bob (straight or with a little bit of wave) but not this look
If you have blonde hair, try to get a nice natural looking color rather than the current batch of bleached blondes like Pink and Christina Aguilera and Gwen Stefani which I think look kind of trashy and really harsh. And if you want highlights, get nice natural looking highlights instead of the striped look it just looks fake and un-natural. Jennifer Anniston usually has very pretty, natural looking highlights. Jennifer Lopez always has very pretty natural looking highlights too.