Where are your jeans fitting tighter? And where do you carry fat?
When I upped my bike training significantly I "biked myself out of" my (tightfitting) jeans, because my thighs grew larger. I lost weight around my waist at the same time though, which is where I store fat. Didn't help much for the jeans problem though, since they were low-rise..
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett