Costume institute gala 2011: textured tresses

Penelope Cruz and Salma Hayek are BFF - which perhaps explains their similar styles at last night's bash. Both stars opted for polished curls, but while Penelope wore her tresses long and loose, Salma's look was more 70s and springy. Packed with volume, this shoulder-skimming look is a winner.

Warren says: "Penelope has beautifully thick gorgeous hair, great to work with. This look says Latino princess, which she is. Almost certainly this look was created by using Flexi Stylers, brushed or combed through."

Choosing something more textured, both Zoe Saldana and Kristen Stewart rocked summery waves. Zoe's look felt polished, with a high shine finish and each tendril defined, while Kristen stuck to her trademark grungy style with her locks piled up in to a loose updo - and she even managed a smile!

Warren says: "Kristen very rarely diverts too far from her trademark dishevelled look. I like that from a front profile it's slightly asymmetric; the parting is informal and done with the fingers and the hair is unkept and unruly at the top. She's one of the new generation of Hollywood starlets - we're seeing a new movement in there appearance, it's no longer always red carpet perfectly manicured or 'trashy' it's constructively dishevelled nodding towards the early 90's and the grunge era."

Also opting for waves, both Kirsten Dunst and Emma Stone proved that beachy blonde hair is always a red carpet hit. While Kirsten's waves feel just a tad too casual for such a dressy event, Emma's textured updo shows the perfect combination of grungy cool and quirky glamour - added to with that brilliant punch of fuchsia lipstick!