It was Hollywood's biggest night, the 83rd annual Academy Awards, which meant glam squads everywhere jumped into action to find fabulous gowns, create flawless makeup and, of course, sculpt some beautiful hair. A few standout trends from this year's red carpet included undone tresses, tightly pulled-back updos and lengthy, smooth strands.

Scarlett Johansson, Marisa Tomei and Natalie Portman wear tousled tresses at the 2011 Oscars. Photos: Jason Merritt, Getty Images (2) | Kevin Mazur, WireImage

Undone Tresses
Going for a more natural, relaxed hair look, many actresses opted for undone, tousled tresses that were perfectly imperfect. Scarlett Johansson's short strands looked like they had been gently tossed around after a relaxing day at the beach, with lots of loose texture that fell just above her shoulders. Marisa Tomei's undone look was a bit more sculpted with large waves that were tucked behind one ear on the lesser side of her part. Natalie Portman embraced the look as well, opting for messy, easy-looking waves that she also tucked behind one ear.

Sandra Bullock, Hilary Swank and Mandy Moore done tight updos at the 2011 Oscars. Photos: Jason Merritt, Getty Images | Kevin Mazur, WireImage | Steve Granitz, WireImage

Tight Updos
Actresses put their own twist on tightly pulled-back updos, even infusing a little bit of texture into them like Sandra Bullock, who stunned with a low chignon. Bullock's hairstylist, David Babali, started with clean, towel-dried hair. He applied Couture Colour Pequi Oil Treatment using a wide-tooth comb. Bullock's hair was then blown out with a round brush for a smooth finish, given an additional dose of pequi oil and brushed straight back.

With the IT&LY Hairfashion Digital Styling Iron, Babali took random half-inch sections starting at the front and twisted the hair for texture. When complete, he added additional pequi oil to his hands to finger-comb the hair back into a ponytail above the nape area. The stylist then wrapped her hair around the band and secured with bobby pins, allowing any loose hairs to fall naturally.

Vetica first blow-dried Swank's strands with Moroccanoil Treatment. After curling small sections to give the hair a bit of wave and texture, he separated the hair from ear to ear below the crown and pulled it back. He backcombed this entire back section for volume and sprayed it for a soft, natural hold with Moroccanoil Luminous Hairspray. He lightly brushed through on the surface and put this section in a loose ponytail and secured it. Then the hairstylist lightly teased the sides and backcombed the top section above the crown, with more attention to the root. He sprayed Moroccanoil Luminous Hairspray and unified the two sections. He made a tight ponytail at the base of the crown and then took three sections, sprayed each one again and interwove them to create an asymmetrical chignon. Vetica emphasized more volume and secured the chignon slightly to the left of center. Finally, he pinned Anna Hu platinum and diamond earrings asymmetrically, one on each side of the chignon. The first slightly above the ear, and the other slightly below the ear on the opposite side.

Mandy Moore's updo was more traditionally slicked back, with a center part that made way for a tight bun at the center of the back of her head. Hilary Swank accessorized her sleek low chignon with a sparkly clip just above the knot.

Jennifer Lawrence, Gwyneth Paltrow and Penélope Cruz show off smooth strands at the 2011 Oscars. Photos: Jason Merritt, Getty Images (3)

Smooth Strands
High glamour doesn't have to mean a precariously placed updo, and several actresses showed off lengthy manes. Gwyneth Paltrow rocked straight, sleek strands that beautifully complemented her slim-fitting gown. Harry Josh, John Frieda international creative consultant, is the man responsible for her lovely look. To achieve it, he started with the new John Frieda Frizz-Ease 3-Day Straight (an at-home alternative to salon straightening treatments) because he wanted Paltrow's strands to stay straight all night long.

Josh began blowing out her hair with a round boar-bristle Mason Pearson brush, straightening each section at a time. Next, he went over each piece with a comb and a flatiron, ensuring every hair stayed sleek. Paltrow's hair was then parted on the side, and Josh combed down all stray hairs and flyaways with John Frieda Full Repair Flyaway Tamer.

Best Actress nominee Jennifer Lawrence loves wearing her hair down and she did so with smooth strands that held gorgeous volume and a hint of curl. Dove celebrity hairstylist Mark Townsend used a dime-size amount of Dove Nourishing Oil Care Serum on damp strands before blowing out her hair in sections with a round brush, then added a hint of styling gel and set it in hot rollers.

"I raked through Dove Nourishing Oil Care Leave-in Smoothing Cream after we took out the rollers to make it modern and shiny," says Townsend. "I didn't want it to be an '80s set!" Next, he sprayed Dove Flexible Hold Hairspray with Natural Movement onto a flat brush and ran it through her hair before misting some Dove Heat Defense Therapy Mist on the ends and taking a 2-inch curling iron to shape them slightly. For the finishing touch, Townsend sprayed Lawrence's mane with Dove Extra Hold Hairspray with Natural Movement to keep the look in place.

And last, but certainly not least, Penélope Cruz, who was on hand to support Oscar-nominated hubby Javier Bardem, kept her locks simple and loose, with straight strands that cascaded down her back.

For more in Oscars news, find out how to get Best Supporting Actress winner Melissa Leo's tousled chignon and take a look at the divine dresses that graced the red carpet.