Luke Bryan and his wife, Caroline, will welcome their second child in August, according to People magazine. Their first child, a son named Bo, will turn 2 in March. "When you successfully brought one in the world, you are a little more confident in your ability to do it the second time," Bryan said. "We're a little more relaxed -- you know everything that can come at you." Bryan's hits include "All My Friends Say," "We Rode in Trucks," "Country Man," "Do I" and "Rain Is a Good Thing."