Thread: One bicep slightly larger than the other :\?

So I've been lifting for a couple weeks now. Doing hammer curls, bench press, push ups, shoulder presses, etc., but I've noticed that one bicep seems slightly larger than the other. :\ (I don't workout lower body since I suppose cycling 50-80 miles per week is enough, probably not though :P)

Anyway... What's the best way to fix this? Do an extra set of reps of hammer curls on the arm with the minimally smaller bicep? Stop doing hammer curls with the arm with the slightly larger bicep until I see both biceps equal?