How should I dress for my boyfriend's birthday?

gummayRgood
Okay, my guy's birthday is coming up and I'm planning to take him out to dinner and hit the club with couple of friends. I'm not really a girly type and dread getting all dolled up. But I figure I would for my guy. So I want to know is what will impress my bf more?

1. dress all casual but wear something very sexy underneath

or

2. dress sexy and sexy underneath (remember I don't dress up at all.
How should I dress for my boyfriend's birthday?
6 Opinion