Nicole Richie Wows in Daring Yellow Dress While Honoring Dad Lionel

Nicole Richie attends the Lionel Richie and Friends in Concert on April 2, 2012 in Las Vegas. Credit: Frazer Harrison/Getty

The concert may have been to celebrate Lionel Richie's music career, but all eyes were on his daughter in Las Vegas Monday night.

Nicole Richie, 30, stunned when she took the stage in a floor-length yellow dress with a bold black floral print that she designed for her own Winter Kate line. She wore her hair in an elegant updo and accessorized with dazzling diamond earrings.

Also in attendance at the star-studded event: Faith Hill and husband Tim McGraw, Marc Anthony with girlfriend Shannon de Lima and Kenny Chesney, who performed "My Love” with Lionel.

The House of Harlow 1960 designer and mom of two has been showing off her incredible style, wearing everything from dramatic jeweled headpieces to boho-glam vintage dresses, on her new show Fashion Star.

"It all depends on my mood that day I'm filming," the trendsetter told Us Weekly of choosing her attention-grabbing ensembles. "I don't have my outfits planned out at all."