This week in celebrity beauty Instagrams, we saw stars get ready for red carpets, runways shows, and Sundance premieres. Though temperatures are freezing in most places, these A-listers managed to look hot (thanks to a little help from their friends [1]). Some highlights: Alexa Chung's Spring-ready floral nail art, January Jones [2]'s backstage beauty shot, and Joan Smalls's stunning cat-eye liner. See more of our favorite filtered photos, and don't forget to keep up with our editors by following POPSUGAR Beauty on Instagram [3]!
Ashley Benson
Sparkles and spikes made for a fierce manicure on Ashley Benson.
Nicole Richie
Andy Lecompte worked his hairdresser magic on the fashion designer's beach waves.
Alexa Chung
The It Brit showed off a darling daisy manicure. Someone has an early case of Spring fever.
Jaime King
The actress prepared to get pretty in pink.
Mindy Kaling
Hollywood's funny lady proved you can match your nails to your accessories — even when glitter is involved.
Karlie Kloss
It was selfie time for Karlie and makeup artist Pat McGrath backstage at the Atelier Versace Haute Couture Spring 2014 show.
Cara Delevingne and Lindsey Wixson
Before the Chanel Haute Couture Spring 2014 catwalk [11], the models (and social media stars) gave a glimpse of that epic club-kid glitter eyeliner and ultramessy bed head.
Joan Smalls
As the megamodel prepared to walk the Haute Couture runways, she gave us a peep of her dreamy cat eye and flawless skin. Saturday-night inspiration, anyone?
Hilary Rhoda
On Wednesdays, we wear pink pouts . . . if you're friends with Hilary Rhoda.
Karolina Kurkova
A black-and-white palette is anything but boring when you colorblock it like Karolina did.
January Jones
January took her first-ever Instagram snapshot from the beauty chair. Look at the va-va-volume!
Diane Kruger
Hairstylist Christian Marc made sure Diane was red-carpet-ready with a soft updo, which was just one of the amazing beauty looks at the Sundance Film Festival [17].
Beyoncé
Before celebrating Michelle Obama [19]'s birthday, Beyoncé relied on makeup artist Sir John for a touch-up .
Nars
The beauty brand had us dreaming of Spring (and tropical islands!) with the vibrant new Nars collection [21] in this shot.
Lupita Nyong'o
Bold-lip queen Lupita tried a burgundy hue on for size.
Emma Roberts
The on-set makeup was a little bloodier than usual for Emma.
Lea Michele
Those bangs! Lea Michele [25] teased Glee's 100th episode with a look at her sleekly styled locks.
Jessica Alba
Jessica smiled in a bright red lip as she soaked up the snowy weather.