alum Bo Bice
and wife Caroline
, who first announced
their pregnancy in June, are expecting their third son, a rep for the singer tells PEOPLE
Baby no. 3 will join Big Brother Caleb James
, 13 months, and Aidan Michael
, 4 this month.
"The Rock triad will now be complete, jokes Bo's rep. "Watch out for the Brothers Bice
or Bo Bice Brothers Band
release later this year!
Caroline and Bice, 33, have been married for