The Voice US coaches Gwen Stefani and Blake Shelton met and fell in love on the singing show.
They started off as friends after bonding over their respective divorces before it blossomed into romance and now they are said to be taking their relationship to the next level and getting hitched.
According to TMZ, the couple are already planning their nuptials and have hired top wedding planner, Jerri Woolworth, for their big day.
Jerri has offices in Tennessee and New York and has experience planning events for the Country Music Awards, the NFL and the NHL.
According to her website, Gwen and Blake, who split with wife Miranda Lambert, would get a planner who is "known for over-the-top events planned for and attended by some of the world's most famous and elite personalities.”
The news comes just four months after Gwen, 40, officially finalised her divorce to Gavin Rossdale after 13 years of marriage.
There is no word yet whether the couple have set an official date for the wedding.
Despite being an item for less than a year, an engagement has been on the cards for a while, according to recent reports.
Earlier this week, it was alleged the pair were both hoping to get married in the near future and that Blake had a "plan in the works".
"He hasn’t been this happy in years", a source told Us Weekly. "They’re both in this for the long haul".
Gwen previously revealed how she found the fact Blake was going through a divorce at the same time as her "a gift".
She told America's Harper's Bazaar magazine: "There I was with my big secret, right? And that's when Blake was like: 'Everybody, before we go out there, I want to let everyone know that by the time this airs, I will be divorced.'"
"[I felt] exposed somehow, you know? But it was like being handed this gift of a friend who was going through the exact same thing at the exact same time."
She added: "And then it was just like everything flipped. It went from horrible to, like, hopeful and, like, 'Wow, God, you just don't know what's gonna happen next...'"
Mirror Online contacted both stars' representatives for comment.