Brad Paisley and Kimberly Williams-Paisley
Alex Berliner/Berliner Studio/BEImages
10/14/2008 at 05:25 PM EDT
Country star Brad Paisley
and According to Jim
actress Kimberly Williams-Paisley are expecting their second child, the couple confirms to PEOPLE exclusively.
"We're having so much fun with our little boy Huck, and we are thrilled that he will have a sibling," says the expectant mom, who is due in April. "He's going to be a great brother."
The couple's first child, who's named for Mark Twain's character, was born on Feb. 22
Williams-Paisley, 37, is currently in L.A. shooting the season finale of According to Jim
. Her husband, 35, is set to host the 42nd annual Country Music Association Awards with Carrie Underwood
in Nashville on Nov. 12.
For more information on Kimberly’s pregnancy, visit PEOPLE's Celebrity Baby Blog