Grande revealed the exciting news on Instagram with a slideshow of her engagement ring and the lovebirds embracing. "Forever n then some," the 27-year-old singer captioned the post.
Manager Scooter Braun was among the first to congratulate the couple. "Ari we love you and could not be happier for you. Dalton you are a lucky man," he commented.
Grande's mother, Joan, also chimed in. "Sooo sooo sooo happy!!!! Love you two!!!" she wrote in the comments section.
Likewise, Justice also couldn't contain her enthusiasm for the couple, writing under the post, "Omggg congrats Ari!!! So happy for you. Your ring is beautiful."
Tinashe added, "Screamingggggg."
In a similar gesture, Hailey Bieber wrote, "YAYYYYYY!!!! so happy for your guys!!"
Kardashian joined the long list of best wishes. "Sooooo happy for u guys!!! Love you!!!" the reality TV star wrote.
Tisdale penned, "Congrats beautiful!!!"
"oh my godddd... love u!! you deserve eternal happiness!!" Millie Bobby Brown wrote.
Gomez, a luxury real estate agent, appeared in Grande's video for "Stuck With U" -- a collaboration with Justin Bieber -- in May. The newly engaged couple have been quarantining together amid the ongoing coronavirus pandemic.
See more congratulatory comments in Grande's IG post here.