Carey last week said "yes" to Packer after the billionaire Australian casino owner got down on one knee and proposed. Packer reportedly put a huge ring on it... a 35-carat diamond and platinum engagement ring, according to Vogue.
Cannon, who split with Carey in August 2014 after a six-year marriage which produced a pair of twins (Moroccan and Monroe), wasted no time to send goodwill to the happy couple.
The rapper and actor shared a picture of himself in a hospital bed with Kevin Hart from BET's Real Husbands of Hollywood looming over him. The caption reads, "It's just a ring Nick...;.." Cannon continued, "Ha! This made me laugh out loud for real!!! HILARIOUS! #AllLove Congrats to @MariahCarey and James! May God Bless Your Future Union...; #GreatPeople #GreatCouple."
In late 2014, Cannon announced he would "never say anything negative about" Carey, adding, "We are forever a family rooted in love." Seems he's a man of his word.
See photos of Mariah Carey from throughout her career: