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David Harbour and girlfriend Alison Sudol cozy up on the red carpet as they arrive at the 2018 Emmy Awards held at the Microsoft Theater on Monday (September 17) in Los Angeles.

The 43-year-old Stranger Things actor looked handsome in a black tux while the 33-year-old Fantastic Beasts and Where to Find Them actress went pretty in a silk dress for the awards show.

PHOTOS: Check out the latest pics of David Harbour

Also joining David on the red carpet was his co-star Cara Buono and her husband Peter Thum.

FYI: David is wearing a The Tie Bar bowtie and Jimmy Choo shoes. Cara is wearing an Akris white gown, Stuart Weitzman shoes, a Tyler Ellis clutch, a Yvan Tufenkjian ear cuff with matching diamond stud, and a Kallati ring. Alison is wearing a Nina Ricci dress, Repossi jewelry, and a Roger Vivier clutch.

David Harbour, Cara Buono and Matthew Modine turn the red carpet into the Upside Down at the 2017 Emmy Awards held at the Microsoft Theater on Sunday (September 17) in Los Angeles.

The actors all posed for photos on the red carpet at the event, where the hit Netflix series received several nominations, including Outstanding Drama Series.

David was nominated for Outstanding Supporting Actor in a Drama Series for playing the role of Jim Hopper on the show.

Matthew‘s daughter, 27-year-old actress Ruby Modine, also posed on the carpet.

Cara snuck in a kiss with her husband, entrepreneur Peter Thum.

Stranger Things is set to return for its second season on October 27.

FYI: Cara is wearing a Cristina Ottaviano gown and Irene Lummertz jewelry.