It might have been Nick (Swaggy P) Young's birthday Monday, but it was Iggy Azalea who took home the fancy gift.

The professional basketball player got down on one knee and proposed to his Australian rap star girlfriend, 24, Monday night, a video posted by Karen Civil on Twitter revealed.

"Would you marry me?" he shouts at Azalea while holding a big box with what appears to be a huge ring inside.

The rap star smiles and says "yes" as everyone around them cheers.

The engagement ring is 10.43 carats with an estimated value of $500,000.

"Nick was very involved in designing the ring," Jason Arasheben, CEO of Jason of Beverly Hills, said in a release. "We wanted it to be both a ring of Iggy's dreams and a ring that fits her personal style."