When my daughter was Dorothy for Halloween she wanted me to wear a costume to match her. I wore a white tank top I already had - as well as my wedding heels. I purchased a silver witch crown, a pink skirt and a wand from Amazon so I could have a DIY Glinda the Good Witch costume. It was great! If you live in cooler weather I linked a white sweater you could pair with the skirt. Without the crown this would even double as a pretty holiday outfit! halloween costume , halloween costume ideas , family costume idea , wizard of oz costume idea ltkseasonal ltkstyletip ltkshoecrush ltkunder50 , halloween LTKfamily LTKHalloween LTKkids