The former "Glee" star and his wife announced the arrival of their daughter Xia on their respective Instagram accounts on Thursday, March 28, sharing a black and white photograph of the lower half of the baby laying on sheets. The picture was framed with a light pink border and accompanied by the message "How wonderful life is, now you're in the world", from Elton John's "Your Song".
Shum, 36, captioned the photograph, "Baby XIA" with adding praying hands emojis, while Rabara, 35, wrote, "My everythings" followed by a purple love heart.
In the comments underneath Shum's post, his "Crazy Rich Asians" co-stars Gemma Chan and Henry Golding sent their congratulations, as well as "Glee" stars Naya Rivera, Matthew Morrison and Chris Colfer.
The couple announced the pregnancy news on social media back in November (2018).
The dancers began dating in 2007 and got married in Costa Rica in November 2015.