Christina Milian's second child — first with boyfriend Matt Pokora — is a son named Isaiah, who was born on Jan. 20. Although the name Isaiah lost a bit of its popularity in 2018, it was ranked the 51st most popular of the year for boys' names, which was the first time the name wasn't in the boys' top 50 in since 1999. Fun fact: Mia Farrow and Carrie Underwood also have sons named Isaiah!