Wynonna Judd and Kellie Pickler on Tuesday were officially announced as two of the contestants on Dancing with the Stars' upcoming season.

Wynonna is feeling a mix of emotions heading into the 16th season of the ABC competition, which begins March 18. Wynonna, who's paired with pro dancer and reigning champ Tony Dovolani , says, "I think I'm scared, but I'm also motivated more than I've been in a long time."

Kellie is also motivated, because Dancing with the Stars happens to be her grandfather's favorite TV show. She tells ABC News Radio, "He told me that if I didn't do it, then I wasn't his favorite granddaughter anymore. I'm his only grandchild, so he's stuck with me regardless if he likes me or not."

Kellie will team up with pro dancer Derek Hough .

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