Shameless star Emmy Rossum appeared on Conan last night to promote the Showtime comedy's second season, and she seemed to make quite a SKINpression on the host, who lost who lost his train of thought twice while chatting with the brunette stunner.

And why not? The comely and candid Emmy revealed she had a dirty dream about Prince Harry the night before ("I woke up pumping my stuffed animal," she joked), talked about one of Shameless' more, well, shameless moments involving a 93-year-old extra and some baby laxative, and shared her tale of mother-daughter lingerie woe:

"Every time I leave the house wearing a dress or a skirt, she asks me, 'are you wearing panties?' and I'll say, 'yes mom,' and she'll say 'big ones'? and I say 'yes mom, big ones' and she's like, 'you know, you can wear two pair'...she's so concerned, she's like 'the paparazzi, you know they love those up the skirt shots..."

Guess mother doesn't always know best!

Emmy then went on to put those famous lungs to use, singing an aria for a hot dog (the kosher beef kind, you pervs):

See more of Emmy Rossum's lovely lungs (and the sweater kittens that keep them warm) right here at MrSkin.com!