"Dancing with the Stars" partners Lil' Kim and Derek Hough are on the ET set! From first impressions and annoying habits to nicknames, music and more, the dance partners hit each other up in a no-holds-barred interview!

When asked what she thought about being paired up with last season's dance champ opposite Brooke Burke, she says, "I was thinking, 'Oh great, God answered my prayers.'"

"I'm not going to lie -- I was a little surprised," admits Derek about finding out Kim would be his pair-up, "because I've had kind of a very similar type of partner for the past three seasons, and you're definitely different: you're a musician, and when you walked in I was like, 'Wow, she is little. She is very small, and I was going through all these things in my head, like how I was going to teach you, because I'd have to teach a little differently. But I am very pleased that you're my partner."

So what is Kim's most annoying habit? "You're always late," says Derek, who doesn't seem too annoyed about it. "It gives me a chance to get there and chill out a little bit."

And the nickname that she can't stand? "Kimbo Slice," laughs Derek.

"I hate that stupid nickname," squeals Kim. "We need to find a new nickname!"

Catch Lil' Kim and Derek competing on tonight's "Dancing with the Stars" on ABC, and watch ET for more with their interview!