Erika Jayne showed off her fitness Wednesday night as she announced her Las Vegas residency.

Erika Jayne shows off weight loss

The "Xxpen$ive" singer showed off her recent weight loss in a shiny metallic mini dress, showing off her toned arms, ballerina legs and plunging cleavage.

To look beautiful, she opted for glamorous makeup and had blonde locks in long cascading waves.

Erika Jayne shows off weight loss

Jayne, 51, celebrated her upcoming Sin City concert with fans and influencers at the Bootsy Bellows nightclub in West Hollywood.

At one point, the 'Real Housewives of Beverly Hills star addressed the crowd, expressing her gratitude and inviting them

to purchase tickets to 'Bet It All on Blonde,' which opens August 8.25 at the House of Blues in Mandalay Bay.

“Okay Los Angeles, let me tell you something. First of all, thank you so much from the bottom of my heart," she said.

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