Better than that...you need an answer. She's going to ask.

Something along the lines of...

"You know I just don't think you're fiance would approve of that."
"I don't want to be the other man."
"I'm just not interested in seeing your new body. I thought it was perfect before you went and altered it."
"It doesn't matter anymore what I think about your body, so I'd rather not see the results."

or, if she give you a specific time... "I have a date that night. But, if I don't get too drunk and end up crashing at her place, I'll call you." (then don't call).

Anyways, have a answer PREPARED. Or you'll end up stumbling over yourself to go see her.

Me 36
Husband 35
D5
S2
separated:
10/29/07-present
Served divorce papers 1/22/09
"When the world gives out beneath your feet, it is time to learn how to fly."