Just ruined a pair of cute jeans...help?

So I was wearing a brand new pair of hollister laguna skinny jeans with some uggs and I was in school. Anyway, they kept sliding down and I had to keep looping the fingers arond the belt loops to pull them up, but the short crotch forced me to pull as hard as I could. Long story short, in second period, I felt the belt loops snap and I had to walk around for the rest of the day with no way to pull up the jeans and I knew that my bikini cut panties could be seen over top. It was embarring and I was pissed. Why are jeans so hard to pull up? How you girls do it without breaking the loops? I just ruined a pair of cute jeans...ughhh!!!