Kristin Cavallari knows she has her work cut out for her on "Dancing With the Stars," but it sounds like she's up for the challenge.

On Monday's show, Cavallari vamped it up in her Hollywood-glam interpretation of the quickstep. Dressed in a sexy, long and flowy white gown — reminiscent of siren Marilyn Monroe — the reality star made a tremendous improvement from her first week's performance, the judges enthused.

In her rehearsal for this week's dance, MTV News caught up with Cavallari and her partner, Mark Ballas, who sized up their competition. They both said everyone brought their own talents to the table and they are on the lookout for them all.

"No one's bad!" Cavallari said. "That's the thing. I think it's going to be a tough season."

Last week, the 24-year-old former "Hills" and "Laguna Beach" star wowed the judges when she shook her way through the cha-cha. This week, she earned 22 out of 30 points — the second-highest score behind Ricki Lake — in addition to some pretty meaty praise from the trio of judges.

"I've been bedazzled by the blond bombshell! I love old, Hollywood glamour! This performance was twinkling with pleasure," Bruno Tonioli gushed. Carrie Ann Inaba added: "Last week, nervous; this week, stunning! You kept your hold, you kept your frame. I thought it was gorgeous!"

Who do you think is Kristin's toughest competition on "Dancing With the Stars"? Let us know in the comments!