"Wish Upon A Star" was directed by Blair Treu an active member of the Church of Jesus Christ of Latter-day Saints and also starred a number of Mormon actors. Katherine herself had a strict Mormon upbringing and was not allowed to date until she was 16. An exception was made for Blossom actor Joey Lawrence (then 18) whom she met at Seventeen magazines 50th Birthday celebration in 1994. However, the romance was not to be, and lasted a mere 3 months. "I was on the East Coast. He was in L.A. It was mostly over the phone," she told People Magazine in 1999.

In 1997, Katherine portrayed Taffy Entwhistle, Rita Hayworth's stand-in, in the movie "Stand-Ins," stealing the show as one reviewer wrote, "with her subtle internalized characterization consisting of scheming determination and lost vulnerability". She was also cast as the beauteous Princess Ilene in "Prince Valiant," a European production also starring Stephen Moyer and Edward Fox. The film which had a sizeable budget unfortunately failed to secure a theatrical release.