"What a gift! ?" Pattie captioned the sweet photo of Hailey planting a kiss on her cheek.
"Love you," the 21-year-old, who recently died her hair pink, wrote in the comments section.
As OK! readers know, Justin holds his relationship to his mother very close to his heart. Pattie gave birth to Justin when she was just 18-years-old.
As we know, the "Love Yourself" singer would later be discovered on YouTube by Scooter Braun and go on to have a very successful career. While Pattie, 43, probably knows about the ups and downs of Justin's career better than anyone, the 24-year-old appears to be in a good place these days. His mother seems to be ecstatic to welcome Hailey into the family, too!
Although the newlyweds already made things official a few months ago at the courthouse, they do plan on having a small ceremony with friends and family in the future. The couple reportedly sent out "Save The Date" cards to their loved ones for February 28.
What do you think of Hailey & Pattie's relationship? Let us know in the comments below!