As long as the clothes are clean I wouldn't worry......my children had favorite things they liked to wear when they were younger...and would have worn them all the time...as far as the car seat I am not sure that 2 lbs is a deal breaker.... Weight can fluctuate and scales can defer. When my children were younger we had to switch to front facing because of size not the weight requirement . Use your judgement if the harness doesn't fit him properly etc..... Then say something to them.....