Country icon Clay Walker attended the ACM Awards Sunday night (April 7) with his wife Jessica -- who was noticeably pregnant and beaming as the couple posed together on the red carpet.

According to Celebrity Baby Scoop, the 'She Won't Be Lonely Long' singer and his second wife are expecting their child this summer. They have made no formal announcement, revealing the pregnancy by simply showing up -- with bump -- on the red carpet Sunday night.

The couple already have a 4-year-old son, William, and a 3-year-old daughter named Mary. In 2008 the couple revealed they were expecting their son by showing up at a red carpet event with Jessica visibly pregnant, then confirmed the news via Walker's fan club newsletter. A representative for Walker has yet to respond to an inquiry from Taste of Country regarding baby No. 3.

Walker also has two teenage daughters from his first marriage.