There is a pair of jeans that I love because they always accentuate my ass.
Also, I love wearing my rock-climbing clothes (when I am climbing, obviously) because I just feel cool and sexy somehow, wearing them. I know my arms and shoulders look good with these racerback tops I always wear, and the little rubber shoes make me feel badass. I guess I like speciality footwear... e.g. ski boots, roller blades, climbing shoes... because they communicate that I have mad skillz, which gives me confidence.