I've gotten her confused with

1) Kelli Williams (looks somewhat similar and almost the same age)

2) CATHERINE McCormack ("Braveheart") (a few years younger)

All three have similar long hair.

But from now on I THINK I'll keep them straight. :)

Then there's CAROLYN McxCormack...

[Also, there's Eric McCormack, but I think I can distinguish him from the rest. :) ]