When Nancy Grace steps out onto the “ Dancing With the Stars” ballroom for the first time, she’ll be sporting a look that’s a far cry from the paint suits of her courtroom days. Think lots of sequins, lots of exposed skin.

“I will give you one operative word: sequins. Tons and tons of sequins. Let me say that these outfits are very revealing,” Grace said today on “ Good Morning America.”

Grace and her professional partner Tristan MacManus, who are readying to dance the cha cha on Monday night’s season premiere, kept their song choice secret, but dished on her dancing skills.

“I think we get too conflicting stories. According to me, it’s going great, but I’ve got this Irish dance partner and I hear this ringing in my ears every night, ‘No, no!’” Grace joked.

“For me as well it’s going great. I think Nancy just needs to have an argument now and again to keep herself sane,” MacManus said, teasing the HLN host who’s known for her though talk. “Everything’s going great. I’m really happy with how we’re going.”

Grace, 51, has already shed 10 pounds in their hard-core rehearsals. Juggling her daily HLN show, her twins and now rehearsing and appearing on “DWTS” has been challenging for Grace.

“I’m practicing all day long,” Grace said. “For me it’s been very, very difficult. …the hardest part for me to be away from [my twins].”

Grace spent the summer in the spotlight covering the months-long trial of Casey Anthony, who was found not guilty in July of murdering her 2-year-old daughter, Caylee. While millions of TV viewers know Grace’s name and strong opinions, her partner, who’s from Ireland, didn’t know who Grace was before they were paired up.

“I wasn’t aware of Nancy at all to be honest,” McManus said. “That’s not true,” Grace interrupted. “I looked at his computer. There were tons of Google, Yahoo searches of Nancy Grace, Nancy Grace. So sad. Obsessed.”

“That was afterwards,” he said. “I’m not too familiar with many people on television here. …but now we’ve gotten to know each other a little bit now and we’re getting along. When I can get a word in.”

Besides Grace, the star-studded celebrity line-up for the show’s 13th season includes Chaz Bono, the son of famed entertainers Sonny and Cher, fashion guru Carson Kressley, NBA champ Ron Artest, model Elisabetta Canalis, reality-TV stars Kristin Cavallari and Rob Kardashian, talk show icon Ricki Lake, war veteran and actor J.R. Martinez, entertainer Chynna Phillips, World Cup soccer star Hope Solo, and actor David Arquette.

Learn more about the full cast of the new season of “Dancing with the Stars.”

“I had a really bad experience with [Arquette]. I ran into him yesterday and he was soaking wet with sweat, which means he’s been practicing like mad and I did not like that. I like the other contestants to be lounging around,” Grace joked.

Watch the two-hour season premiere, Monday, Sept. 19 at 8 p.m. ET and visit abc.com for more information on “Dancing With the Stars” Season 13.