"Real Housewives of Beverly Hills" star Adrienne Maloof made her red carpet debut since splitting from husband Paul Nassif last night -- and she was missing one pricey accessory.

While the 50-year-old looked amazing with a fresh tan and tight bandage dress, she really made a statement by showing up to Kitson without her wedding ring.

The last time Maloof hit any red carpet, it was with her husband of 10 years on July 21 ... and yes, she wore the giant sparkler.

Paul filed for legal separation last week -- telling TMZ at the time "The welfare of our children is my primary focus as Adrienne and I work through this difficult time. I want the best for her and our children and I hope that everyone can respect our privacy away from the cameras."

Adrienne seems to be doing well since the split though -- check out more pics of her last night above!

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