Stone looked giddy and in love as she held McCary's hand on Saturday; a wide smile was displayed across her face. She sported black, knee-high leather boots and a dark coat for the occasion, and accessorized her look with her unique pearl engagement ring.
A source recently told ET that the ring, made in Tokyo by master jeweler Yoshinobu Kataoka and purchased at NYC-based retailer Catbird, boasts an 8mm untreated Akoya pearl surrounded by a diamond snowflake motif. The ring features solid 18k gold and 0.37 carat diamonds.
Also out for SNL's after-party on Saturday were Jennifer Lopez and her fiance, Alex Rodriguez. The former baseball star made a surprise cameo during one of the sketches during this week's Lopez-hosted show.
During an interview with ET last week, Lopez said there weren't any plans on having Rodriguez stop by for a sketch.
"There was no talk of that," she said with a laugh. "Not yet." Clearly, things came together in time for Saturday night's show. See more in the video below.