Gwen Stefani and longtime beau Blake Shelton stepped out for date night on Wednesday, joining a slew of other celebs at a pre-2020 Grammys party.

The two singers, who have been dating for more than four years, attended Warner Music Group's bash at the Hollywood Athletic Club. Stefani wore a semi-sheer, colorful tattoo-style mini skirt and thigh-high patent leather boots. Shelton wore a navy blazer over an untucked striped blue shirt and blue jeans.

"Date night w my boo @blakeshelton Gx," Stefani wrote on Instagram.

Shelton is nominated for a 2020 Grammy for Best Country Solo Performance for "God's Country." This marks his ninth nomination in nine years. He has never won a Grammy before. Stefani, who has three Grammys, is not nominated for an award this year.

Other celebs spotted at the party included music stars KehlaniJoJo and Lizzo. The latter is nominated for Best New Artist and seven other awards at the 2020 Grammys, which will take place on Sunday.

Lizzo also attended Spotify's pre-Grammys party honoring the Best New Artist nominees. Other guests included Billie Eilish and Lil Nas X, who are also up for the coveted honor, as well as Bebe RexhaTinashe, and actresses Ariel Winter and Kate Beckinsale.

See photos of celebs at pre-2020 Grammys parties below:

Ben Platt, Zoey Deutch

Alex J. Berliner/ABImages

Kate Beckinsale, Pre-2020 Grammys Party, Party for No Reason

Erik Voake/Getty Images for JAJA Tequila

Bebe Rexha, Women in Harmony Pre-Grammy Luncheon

Stefanie Keenan/Getty Images

Cyndi Lauper, Women in Harmony Pre-Grammy Luncheon

Stefanie Keenan/Getty Images

Mandy Moore, WTF widget

Jordan Strauss/Invision for UMG/AP Images

Jordin Sparks, Dinah Jane, Women in Harmony Pre-Grammy Luncheon

Stefanie Keenan/Getty Images

Tinashe, Women in Harmony Pre-Grammy Luncheon

Stefanie Keenan/Getty Images

JoJo, Natasha Bedingfield, Women in Harmony Pre-Grammy Luncheon

Stefanie Keenan/Getty Images

Jordin Sparks

Erik Voake/Getty Images for JAJA Tequila

JoJo, Bebe Rexha, Cyndi Lauper, Women in Harmony Pre-Grammy Luncheon

Stefanie Keenan/Getty Images for Bebe Rexha & Women in Harmony

Cee Lo Green, Shani James

Kinga Sarabia

Billy Porter, Billie Eilish, Spotify Best New Artist Party, Pre-Grammys

AFF-USA/Shutterstock

Lizzo, 2020 Warner Music Group Pre-Grammy Party

Jean Baptiste Lacroix/Getty Images

Blake Shelton, Gwen Stefani, 2020 Warner Music Group Pre-Grammy Party

Tommaso Boddi/Getty Images for Warner Music

Ariel Winter, Spotify Best New Artist Party, Pre-Grammys, WTF Widget

David Livingston/Getty Images

Lil Nas X, Noah Cyrus, Spotify Best New Artist Party, Pre-Grammys

Frazer Harrison/Getty Images for Spotify

Kehlani, 2020 Warner Music Group Pre-Grammy Party

Gregg DeGuire/FilmMagic

Bebe Rexha, Tinashe, Spotify Best New Artist Party, Pre-Grammys

Anna Webber/Getty Images for Spotify

Kate Beckinsale, Spotify Best New Artist Party, Pre-Grammys

Erik Voake/Getty Images for Spotify

Tom Kaulitz, Heidi Klum, Spotify Best New Artist Party, Pre-Grammys

Rachel Murray/Getty Images for Spotify

Lizzo, Spotify Best New Artist Party, Pre-Grammys

Frazer Harrison/Getty Images for Spotify

Ben Platt, Zoey Deutch, Spotify Best New Artist Party, Pre-Grammys

Rachel Murray/Getty Images for Spotify

JoJo, 2020 Warner Music Group Pre-Grammy Party, WTF Widget

Gregg DeGuire/FilmMagic

Evan Ross, Ashlee Simpson, Spotify Best New Artist Party, Pre-Grammys

Chelsea Lauren/Variety/Shutterstock

Olivia Holt, Spotify Best New Artist Party, Pre-Grammys

Frazer Harrison/Getty Images for Spotify)

Kate Beckinsale, Ryan Tunick, Spotify Best New Artist Party, Pre-Grammys

Charley Gallay/Getty Images for Spotify

Alexis Ren, Spotify Best New Artist Party, Pre-Grammys

Charley Gallay/Getty Images for Spotify

The 2020 Grammys will air live from the Stables Center in Los Angeles on CBS on Sunday, January 26, at 8 p.m. ET / 5 p.m. PT.

Check out a full list of Grammy nominations.

E!'s coverage of the 2020 Grammys begins Monday on Eonline.com!

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