Kelly, 43, journeyed to Greece for the wedding of her friends Doug & Sanj AKA The Travelling Gays.
The mother of one stunned in a strapless yellow dress with gorgeous fabric draped down the middle.
"So honored to be apart of your love ❤️ and what a special day!!," Kelly captioned one of the wedding snaps. "Your wedding is so beautiful !! @thetravellinggays."
Kelly appeared to be in great spirits after her latest breakup from Brian. They previously split up in July 2019 but got back together days later.
She vowed, however, in a series of Instagram Stories posted on Thursday, August 15, that their split this time is for good.
Kelly became social media official with Brian in January 2019. She posted endless clips and photos of their outings that included their children from previous relationships.
Their former relationship will be part of RHOC's 14th season which premiered two weeks ago on Bravo.