This is true. It is good to remember that good grooming and appearance does not mean a three piece suit. Someone can wear jeans and a polo shirt, and look neat and clean.
And appropriate. I lost my chance at my first job by people telling me to wear heels, hose, gloves and a hat. I was just out of high school and trying for a clerk's job at the dime store. Duh! Somebody else also told me to negotiate for my first wage. That did not go well either! LOL. I caught on quickly after that.