They have been virtually inseparable since their romance blossomed last fall.

And Gwen Stefani and Blake Shelton solidified their hot couple status as they made their red carpet debut at the Vanity Fair Oscar Party in Beverly Hills on Sunday.

Gwen, 46, stunned in a red Yanina Couture gown featuring applique petals and a long sheer skirt.

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Hot couple! Gwen Stefani and Blake Shelton held hands as they arrived at the vanity Fair Oscar Party on Sunday

She carried a coordinating Jimmy Choo clutch to complete the look.

The platinum blonde stunner wore her locks in classy curls and donned her signature scarlet lipstick.

Country crooner Blake let his leading lady steal the spotlight as he opted for a dark shirt and jacket with casual jeans.

See Gwen Stefani updates as she holds hands with Blake Shelton at Vanity Fair Oscar Party

Standing out: Gwen, 46, opted for all out glam in a Yanina Couture dress with sheer skirt

Beautiful look: Gwen's gown featured a red petal applique design and carried a Jimmy Choo clutch

Taking the lead: The 39-year-old star couldn't stop smiling as he took Gwen by the hand

The 39-year-old star couldn't stop smiling as he led the way in front of photographers.

The duo held hands throughout their entry into the party held at Wallis Annenberg Center for the Performing Arts.

Once inside however the No Doubt hitmaker posed solo to show off her sexy look.

The loved-up pair were also spotted grabbing dinner together at Spago's Restaurant after the Beverly Hills bash.

They kept close as they left Wolfgang Puck's eatery, walking hand-in-hand in their eye-catching looks from the Vanity Fair party.

Blonde beauty: The TV star wore her platinum blonde locks neatly styled in a bob

Loved up: The mother-of-three giggled as the duo enjoyed their date night

Siren: Inside the venue Gwen smouldered as she posed against a wall

Singers unite: The No Doubt frontwoman posed alongside fellow songstress Demi Lovato who wore black

Double date! Blake and Gwen posed with Demi and boyfriend Wilmer Valderrama

Earlier this week, Gwen gushed about how her new boyfriend Blake had inspired a burst of creativity for her new album, which comes out on March 18.

She admitted to Ellen De Generes that half of the songs on her new album were written just last month, after being inspired by her new relationship.

The singer blushed and covered her mouth with her hand when Ellen said: 'So let's talk about Blake!'

He's got her back! Blake could be seen guiding girlfriend Gwen into the party as the star navigated the stairs in her sky-high heels

Was it something he said? Gwen pulled a silly look as the duo made their way into the Vanity Fair Oscar Party

Leading the way: The celebrity couple were ready to party as they took directions while entering the famed bash

Watch your step! The blonde beauty held tightly to her dress so as not to trip as she maneuvered the stairs

Can't hide her smile! Gwen looked blissful as she enjoyed the post-Oscars bash with new beau Blake

'Oh my God,' Gwen laughed. 'I thought it would be a good idea NOT to talk about Blake. See what would happen...'

Gwen shares three children with ex-husband Gavin Rossdale who she split with last summer after it emerged he cheated on her with the couple's nanny.

Date night! That night the pair were also spotted leaving Spago's Restaurant in Beverly Hills after a romantic dinner together

Smitten: The loved-up couple kept close together as they left the restaurant, walking hand-in-hand