Unbeknownst to fans, it's believed that Grande already gave the world a hint at her relationship status last week when she spoke with iHeartRadio's REAL 92.3's Big Boy during a listening party in California for Kanye West and Kid Cudi's new album, Kids See Ghosts.
The pop superstar admits in the video that was posted on June 2 that she wasn't "expecting an interview," which is exactly why she may have been caught sporting the sizable ring.
While Grande doesn't mention her engagement at all, she does nervously run her left hand through her hair, revealing an enormous pear-cut diamond ring that shines brightly in the lights set up for the party.
While it's possible that the ring could just be a random accessory, the 24-year-old singer clearly acts like she didn't mean for anyone to see it when she quickly drops her hand down and keeps her hand covered with her jacket sleeve for the rest of the interview.
However, that wasn't the only time she flaunted the huge rock. While posing for a photo with Ryan "Selfie Kid" McKenna -- who gained fame when Justin Timberlake posed for a selfie with him during this year's Super Bowl -- a photographer snapped a pic of their selfie moment, and it's clear she's sporting some serious hardware on that finger.
News of Grande and Davidson's engagement broke on Monday, and ET has reached out to the singer's rep.
The pair first were rumored to be an item after being spotted together by a source at an SNL after-party. They then made their relationship Instagram official on May 30 with a sweet photo of them clad in Harry Potter attire.