'Extra's Mario Lopez launches men's underwear collection RatedM

Mario Lopez has launched a men's underwear collection called RatedM.

The collection will feature men's intimates such as boxers, briefs, skirts, knit jerseys and singlets.

Lopez told WWD: "I'd always wanted to get into the apparel and fitness world, and I thought, 'Why don't I just start my own [line]?'"

RatedM is available at Freshpair.com with plans to expand to select Bloomingdale's locations in February 2012.

Last year, Lopez and girlfriend Courtney Mazza, welcomed their first child, a baby girl named Gia Francesca Lopez.

The Extra host hopes to have more kids and revealed they are already "practising" for their second child.

Watch Mario Lopez feeding his baby girl backstage at The Ellen DeGeneres show below: