By Debbie Emery - Breaking Celebrity News Reporter

Former American Idol contestant Katharine McPhee has proven that she’s all woman in the new hit musical show, Smash, showing off a sizzling sexy side that most fans didn’t even know existed!

In celebration of her ground-breaking new role, Breaking Celebrity News brings you seven things that you didn’t know about the talented 27-year-old singer.

7. Katharine doesn’t act like a Hollywood starlet but she actually grew up in La-La Land and both her parents are in the entertainment industry. Her mom, Patricia, was a vocal coach and cabaret singer, while dad Daniel is a television producer.

6. McPhee began hitting the high notes when she was just two years old, and was soon on stage performing in musicals and plays while she was attending Notre Dame High School in Sherman Oaks, California.

5. She’s a college drop out! Katharine majored in musical theater at Boston Conservatory but dropped out after just three semesters after her manager encouraged her to audition for TV pilots.

4. The pressure to be thin has weighed heavily on Katharine during many times in her life, and she has admitted to battling eating disorders from the age of 13. After seven years of extreme yo-yoing from purging and excessive exercising to binging in college, she entered a three-month rehab program just before she appeared on American Idol.

3. Despite coming in second to gray-haired crooner Taylor Hicks in the season five American Idol finale, McPhee won a place in viewers’ hearts with her moving rendition of Judy Garland’s Somewhere Over The Rainbow.

2. She comes across as a goody two shoes, but Kat’s acting roles are f