Holiday Party Hairstyles You Can Master in Your Office Bathroom

WHAT YOU NEED: A large-barrel curling iron, OUAI Matte Pomade ($24; sephora.com), Klorane Dry Shampoo ($20; sephora.com), OUAI Wave Spray ($26; sephora.com), Sachajuan Hairspray ($21; net-a-porter.com)

HOW TO DO IT: Start by curling individual sections away from your face, and allow it to cool completely—Collins' hairstylist Gregory Russell added a blast of dry shampoo to her root area while waiting for her curls to set, then sprayed the product over her lengths to lock in the texture. Use a brush to break up the ringlets, and follow with a small amount of pomade through your mid-lengths and ends. Pull two sections on either side of the head in an upward direction, and once you've anchored them into place with your bobby pins, brush the rest of the hair back to give the crown some Bardot-esque volume. After working a few pumps of wave spray through the lengths, finish with a veil of hairspray

WHAT YOU NEED: GHD Creative Curl Wand ($200; sephora.com), Kim Kimble Curls Bounce Back Curl Revitalizer ($16; kimkimble.com)

HOW TO DO IT: Curly girls take note—you'll want to apply a conditioner and let your hair air-dry beforehand to ensure all of your natural curves come through. Henson's hairstylist Kim Kimble used the GHD Creative Curl Wand over individual sections to create a piecey texture. Follow with a few pumps of the Curl Revitalizer to redefine any ringlets that may have lost their shape during the day, and create an almost-wet shine.

WHAT YOU NEED: Flat iron, three clear elastic hair ties, hair bungee cord, OUAI Hair Oil ($28; sephora.com)

HOW TO DO IT: Pass a flat iron through your layers to impart a bone-straight texture. Jen Atkin, Kloss's hairstylist, added extensions to give the style some length, but this step is optional if you're not the type to keep clip-ins stashed in your desk drawer. Use the clear elastics to form three tiny ponytails high on your crown, then wrap the bungee cord around the group. Finish by running a few pumps of OUAI's hair oil through your mid-lengths and ends.

WHAT YOU NEED: Flat iron, MOP Orange Peel Molding Cream ($22; mopproducts.com), finishing brush, hair bungee

HOW TO DO IT: Iron your hair pin-straight, then use a dollop of the MOP Molding Cream through the middle portion of your hair to the tip. Chopra's hairstylist Castillo used a finishing brush to evenly distribute the product, and after creating a precise side-part, he twisted her strands behind her ear so that it fell down her back. Gather your hair into a low pony at the nape of your neck, anchor it using the bungee, then wrap a loose piece of hair around the bungee to coneal it.

WHAT YOU NEED: Bobby pins, Flow Touchable Texture Design Cream ($23; flowhaircare.com), hairspray

HOW TO DO IT: Hathaway's hairstylist Anh Co Tran curled her layers beforehand, but if you've been stretching out the life of your current blowout, work with the waves you currently have. Run the smallest amount of Flow's Texture Design Cream through your ends to give your hair an undone, tousled appearance, then gather a section of hair at the top of your head for the bun. Twist it into a knot and secure with bobby pins. Finish with hairspray if needed, but don't stress if a few wisps fall out over the course of the night. That undone aesthetic is all part of the appeal.

WHAT YOU NEED: Leonor Greyl Gel A L'Hibiscus ($35; nordstrom.com), ponytail holders, bobby pins, Leonor Greyl Laque Souple Hairspray ($36; nordstrom.com)

HOW TO DO IT: Split your hair into top and bottom sections horizontally from ear to ear. Work the Leonor Greyl Gel through the bottom half and slick it into a low ponytail. Part the top section in the center and tie it into the bottom ponytail, but make sure the top part maintains its soft, undone appearance. Clarke's hairstylist Adir Abergel applied another layer of gel over the entire ponytail, ensuring it would last all night. Twist or fold the ponytail into itself to create a bun, then secure with bobby pins.

WHAT YOU NEED: Hair elastic, Unite Texturiza Spray ($29; unitehair.com), teasing comb, R+Co Vicious Strong Hold Hairspray ($29; randco.com), bobby pins

HOW TO DO IT: Although Hudgens's hairstylist Riawna Capri added a trio of braids at the back of her head, that step is optional if you're pressed for time. Gather all your strands into a high ponytail, give it a light backcombing with your teasing comb, then blast it with the Unite Texturiza Spray to maximize the volume. Wind it into a messy bun, then use your bobby pins to anchor it into the base. Finish with hairspray.