Rumer Willis and Jayson Blair make their romance official at the Audi and Derek Lam Emmys Week party

Rumer Willis looked striking in a satin lilac gown as she attended the Audi and Derek Lam Emmys Week party at Cecconi’s Italian restaurant held in Los Angeles last night.

Posing with a hand on her hip, Rumer Willis, 24, looked confident in the Oscars-worthy dress.

The neckline was exceptionally daring, slashed way below the cleavage and just above the navel.

Of course, the eldest daughter of Demi Moore and Bruce Willis injected a little alternative fashion fun by keeping her nose ring in, wearing a gold body chain and painting her fingernails different colors.

Rumer Willis attended the event with new beau Jayson Blair, 28, making their romance official.

While the lovebirds have been spotted on several dates together and running errands around Hollywood, Sunday evening marked their debut red carpet appearance together.

Having already starred in Glee, 2 Broke Girls and The Hard Times of RJ Berger, Jayson Blair’s notoriety looks set to soar – not only because of dating Rumer Willis, but having been cast in NBC buzz show The New Normal.

And Rumer Willis is certainly not shy when it comes to supporting her new beau.

Affectionately referring to him as “my man”, Rumer Willis offered a little free PR via Twitter, writing: “Hey everybody check out the season finale of @DropDeadDiva tonight my man @Jayson_Blair is guest starring.”

She added: “Hey guys check out the premiere of my guy @Jayson_Blair new show @NBCTheNewNormal after The Voice.”

Despite her parents’ success, Rumer Willis has struggled to find silver screen stardom in the same light.

Instead, she secured work playing the role of Gia on 90210 back in 2009, and has since starred in one episode of The Secret Life of the American Teenager and Workaholics.