"Happy Birthday!!!" wrote Khalifa, 25. “Everyone welcome this perfect young man into the world.”
The rapper gave fans a hint at the good news on Tuesday when he posted a photo of a fetal heart monitor to Instagram with the caption "coming soon." The couple had picked out the name for their baby boy in January, telling L.A. radio station Power106 at the time, "It's a total boss name for a boy."
Added Rose, 29, "It's funny because I came up with the name for our boy and immediately he came up with a rapper [nickname] for him."
Congratulations to the happy family!
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(Photo: Christopher Polk/Getty Images for NARAS)