My son doesn't wear pants, he wears Babylegs.  The monster pattern is my favorite: they are adorable.  I love all Babylegs products.  I can't stress enough how practical babylegs are: good for diaper changes, crawlers, potty training.  Big brother wears them on his arms on cool mornings, and take them off when it gets hot in the afternoon.  Don't be scared by the price: this is the only piece of clothing that your child will wear for several years until your baby is ready for college.  I love these!