The singer got THE BEST present for her 27th birthday, as her friends gifted her a personal message from the "Shark Tank" star, as well as a special visit to watch The Sharks in action.
The video was shared by Selena's friends, who started off playing a fun reel for the star before a video message from Cuban appeared on the screen.
"I just wanted to say happy 27th birthday," Cuban said.
He added, "Enjoy. Hope you have many, many more. Thank you for watching."
The surprise didn't end with the well wishes, because producers are also giving Selena the chance to watch a live taping of the investment show.
"Shark Tank x SG," the screen read, informing the star that she would be going to "The Tank" in September.
"Not many of you know but I am obsessed with shark tank," Selena wrote. "Two of my best friends nailed my gift."
It was an emotional birthday for Selena, who admitted to fans she cried tears of joy over all the heartwarming message she received.
"I wanted to thank each and every one of you for your words on my bday," she wrote.
Selena added, "Not just the quick notes. The thought that goes behind every word you write usually ends up with me crying grateful tears like I did last night."
It's unclear if Selena will get the chance to sit in with the Sharks, or even pitch her own product.
Not that we have to inform Kevin O'Leary, Barbara Corcoran, Daymond John, Robert Herjavec, Lori Greiner or Mark Cuban -- but if Selena is behind a product, it's probably worth an investment.