Fun 107 has added a familiar face to Friday night's Monster Mash guest list. JR, Michael Rock and Larry invited X Factor Top 24 Finalist, Jillian Jensen, this morning while she was on the Fun Morning Show. Jillian will be hanging out with the crew. She told us this morning that she'll be dressing up as "Sexy Spongebob Squarepants" I'm not sure how someone wearing square pants can be sexy, but I guess we'll find out Friay night! Either way, this is the chance for you to meet Jillian Jensen and ask her about how she catapulted herself from her home in Rochester all the way to Demi Lovato's home in Malibu.

Listen to Jillian's interview from this morning right here:

Here's a pic of her funky shoes she was wearing.

See a performance from Youtube sensation, "Ahmir".

Cash prizes for sexiest, funniest and scariest costumes.

Doors open at 9 at White's of Westport. Limited occupany, so arrive early!