I need to get my 2 dds sandals. Ages 10 & 12. When they were younger I used to get them Birkenstock Rios which come in a narrow fitting. They're now in adult shoe sizes and I can't justify £60 for sandals that they'll wear one summer then grow out of. But they're too old for Clarks. They both have very narrow feet so I can't just get fake Birkenstocks from Office because they fall off. Where do people get their pre-teen girls sandals that look good, but still support their feet?