Kyle Richards is aging (and dressing) backwards.

The “Real Housewives of Beverly Hills” star, 54, hit the red carpet for the Elton John AIDS Foundation Oscar Party 2023 on Sunday night in a slinky LBD — taken straight from the closet of her 26-year-old daughter.

“Hair and make up [sic] by me,” Richards captioned an Instagram Story showing off her look, adding, “Stole the dress from @alexiaumansky.”

Richards accessorized the simple strapless black dress with a colorful choker necklace and sparkling silver purse.

She also posed in Elton John Eyewear for the event’s photobooth, posting the results on her Instagram — with fans quick to praise her slimmed-down appearance amid Richards’ weight loss journey.

Nicole “Snooki” Polizzi called her a “queen,” while “RHONJ” star Melissa Gorga commented “Okayyyy” and “RHOC” Tamra Judge left a fire emoji comment on Richards’ post.

“The shoulder blades are shoulder blading,” one person commented. “No disrespect to the eyewear, but I didn’t even notice the glasses. ????????????????,” another said.

Though daughter Alexia — and Richards’ other three children — stayed home for the night, the “Housewife” sat at the table with husband Mauricio Umansky and former “RHOBH” co-stars Lisa Rinna and Diana Jenkins, as well as Harry Hamlin and Asher Monroe.

She also posed with Kathy Hilton, though Richards recently said that she’s not on speaking terms with her sister.

It’s unclear if Sutton Stracke — who previously sparred with Rinna over a past Elton John charity event — was present at the party.

Meanwhile, Richards recently revealed that she’s been sober for seven months while on a health journey that saw fans accusing the “Halloween” actress of using weight-loss diabetes drug Ozempic. She has furiously denied the rumors, calling the accusations “offensive” and “frustrating.”

Richards instead credits a diet of no carbs, sugar or alcohol and consistent, difficult workouts for her body transformation.