To be fair, if you ask on S&B what the posters think of an item of clothing you will get it judged (normally politely) on its fashionability and flatteringness (not an actual word). That's kind of the deal. Nobody spontaneously rugby tackled the OP on the school run and said "Oi! You in the frumpy boots! You look awful!"
But actually if you come in and specifically say "I wear whatever I like, and don't give a monkeys about what's fashionable or flattering but I've set my heart on a lime green velvet tutu, please can you help me find one?" then the lovely S&Bistas will happily set to work on your challenge with only the bare minimum of raised eyebrows.