In the snaps, the Drop The Mic host wore a skimpy green crop top, while her Baby hitmaker fiance was shirtless and rocked his many, many tatts.
But the most eye-catching element of the images was the gigantic rock on Hailey's finger.
The massive diamond cluster appeared to be held to the blonde beauty's finger via twin gold straps.
Just hours after news broke that the pop star had proposed to the model in the Bahamas on Saturday night, Hailey's father tweeted a message of congratulations to the couple.
"Sweet smile on my face! me&wife (Kennya) always pray 4 God's will!! He is moving in the hearts of JB&HB, Let's all pray for His will to be done. Love you 2 so much!!!
"#Godstiming #bestisyettocome Congrats @JeremyBieber" the veteran actor wrote in the now-deleted tweet.
The Usual Suspects star also shared a passage from Ephesians about marriage.
Stephen is also father to 25-year-old daughter Alaia with wife Kennya, who he married in 1990.
Prior to the congratulations tweet, the Bio-Dome actor shared a religious quote with the hashtag, #blessed.
"John 1:14 14 The Word became flesh and made his dwelling among us," he tweeted. "We have seen his glory, the glory of the one and only Son, who came from the Father, full of grace and truth." he wrote.
TMZ broke the news on Sunday that the Canadian singer got down on one knee at a restaurant in the Bahamas on Saturday.
Two eyewitnesses told the website that Justin's security team asked people to put their phones away as something special was about to take place.
Stephen's tweet came after Justin's father Jeremy Bieber spoke about how proud he is of his son in an Instagram he shared over the weekend.
"@justinbieber proud is an understatement! Excited for the next chapter!" Jeremy captioned the shot.
He followed up with a tweet writing "the proudest".
Justin's mother also made a comment on Twitter Saturday, writing, "Love Love Love Love Love Love Love."
Justin and Hailey have been dating for little over a month when the longtime pals reignited their romance after first dating briefly back in 2016.