CHRISTINA RICCI - RICCI EMBARRASSED BY GHOST KISS

Actress CHRISTINA RICCI ranks having to kiss a ghost as the most embarrassing thing she's ever done.
The star appeared in the 1995 movie version of cartoon show Casper - and insists smooching the computer-generated spook was particularly daunting.
She tells MTV.com, "Kissing Casper was really embarrassing, because he was supposed to be see-through, so I had to make kissing faces, and I was 13, and I was so mortified. Oh that was terrible."