Baby, baby oh: Justin Bieber and Hailey Bieber expecting first child, renew their vows

Justin Bieber and Hailey Bieber renewed their vows in Hawaii on Thursday (May 9). Photo: Justin Bieber/Instagram

Cue up his 2010 megahit Baby.

Justin Bieber and Hailey Bieber (nee Baldwin) are expecting their first child together - and have renewed their vows.