My DD started her periods this week, has taken it in her stride. However, she's got some nice new pants which she doesn't want to get stained. I've told her unfortunately this is something she may just have to accept, but have been looking around for some dark or coloured pants so strains won't show so much. I can't find any at the moment, can I buy them. She's just gone in 11-12 pants, doubt she could wear anything much bigger as she's just over 5st.