From episode 6 (courtesy RTL2).
 

Birthday: July 1st, 1977 as Katherine Maria Wagner.

Kathy Wagner has started at the age of 3 to work as an actress. She attended a the University  of  Massachusetts Amherst in 1995 majoring in Communication Disorders (1996). She graduated in May 1999 and went back to acting with a role in COME ON GET  HAPPY:  The Partridge Family Story.  In October 1999 the following message appeared in the WY mailing list:

>I have graduated from College and now live back in California. I have
>decided to try out acting again and actually just finished a movie for TV
>called Come On Get Happy. Its a true story about the actors who were in the
>Partridge Family Series in the 1970's. It will be on in the States in
>November. I hope you get the chance to see it and see what I look like now.

The movie is aired on Saturday November 13 on ABC.

Trivia: 

• Kathy is rather short: 5' 4" (160 cm).
• A former classmate told me: "Kathy Wagner went to high school in Sothern California.  She was the lead character of several school plays, including The Wizard of Oz.  She was genuinely a really nice person that had a friendly smile and wasn't the stuck-up snotty popular type.  Her French isn't all that great."
• Hey, this is Kathy Wagner page about her
• She had guest appearances in "Beverly Hills, 90210", see below, "Growing Pains", "Santa Barbara", and "Gimme a Break!" (as Young Julie).
• Her agent's address:  Stone Manners Agency

   8436 W 3rd Street
   Suite 740
   Los Angeles, CA 90048