The biggest stars in Hollywood came out Sunday night for the 21st annual Screen Actors Guild Awards. The event, held at the Shrine Auditorium in Los Angeles, celebrated 2014's outstanding performances in film and primetime television.

Sixty-five actors were nominated, but only 13 people walked away with the Actor statuette. However, not all the focus was on the SAG stage. Here are the best and worst dressed stars that caught our attention on the 2015 SAG Awards red carpet:

Best Dressed

Lupita Nyong’o

Absolutely stunning! Lupita Nyong’o was on hand at the Screen Actors Guild Awards to present an award alongside Jared Leto. The 31-year-old wore a striped watercolor Elie Saab gown with long sleeves and a deep V-neck cut. Nyong’o gets double points for donning a shorter version of the dress for the Weinstein after-party.

Kaley Cuoco

Kaley Cuoco of “The Big Bang Theory” kept her SAG red carpet look simple yet elegant. Her red Romona Keveza gown hugged her svelte frame and her Forevermark diamonds were the perfect accessory to look like Hollywood royalty.

Kaley Cuoco Kaley Cuoco in Romona Keveza on the SAG Awards red carpet. Photo: Reuters

Melissa Rauch

Kaley Cuoco wasn’t the only “Big Bang Theory” star turning heads. All eyes were on Melissa Rauch in a color block strapless Pamella Roland gown.

Melissa Rauch Melissa Rauch in a Pamella Roland gown on the SAG Awards red carpet. Photo: Reuters

Maisie Williams

Check out Arya Stark! “Game of Thrones” actress Maisie Williams, 17, looked all grown up on the SAG red carpet rocking a flowered lace red minidress.

Maisie Williams Maisie Williams plays Arya Stark. She appears here on the red carpet before the Screen Actors Guild Awards show. Photo: Reuters

Jennifer Aniston

Holy cleavage! Jennifer Aniston looked stunning in a deep V-neck vintage Galliano gown. As if the dress wasn’t enough of a head turner, Aniston added a drop necklace. 

Jennifer Aniston Jennifer Aniston in a vintage Galliano gown on the SAG Awards red carpet. Photo: Reuters

Worst Dressed

Emma Stone

Emma Stone decided to switch things up with a tuxedo-esque gown by Dior Couture. Unfortunately the dress almost took down Naomi Watts while the two were onstage accepting the award for Outstanding Cast in a Motion Picture for “Birdman.”

Emma Stone Emma Stone on the SAG Awards red carpet. Photo: Reuters

Rebecca Gayheart

Rebecca Gayheart’s blue dress didn’t impress on the red carpet. The wraparound tie aged the actress and added unnecessary fabric to the front of her gown.

Rebecca Gayheart Rebecca Gayheart on the SAG Awards red carpet. Photo: Reuters

Laura Carmichael

“Downton Abbey” actress Laura Carmichael donned a Vionnet dress at the SAG Awards. The zebra-ish print seemed dated. 

Laura Carmichael Laura Carmichael on the SAG Awards red carpet. Photo: Reuters