I suggest you to wipe clean with a damp cloth. Use only water or window glass cleaner. Wipe dry with a clean soft cloth to remove water mark and you see a sparkling mirror or Glass.
You can find a white full length mirror at Walmart or Target. Also you might could find a while full length mirror at Marshall's and possibly The Christmas Tree Shop.
Full Length Mirror
Full length mirror: Mainly used in tailor shops and stores to see how one looks in a piece of clothing before purchasing it.
That will depend upon your focal length--how far your eye is from the mirror. At a useful focal length the mirror can only be a few inches shorter than the subject.
You can find a full length mirror at retail stores such as Target, Walmart, Lowe's, Pottery Barn, IKEA, and Bed Bath & Beyond. You can also shop online for full length mirrors at each of these stores' official websites.
It's a "full length mirror"!
Cheval glass
There are many stores online that can fulfil your needs. For example, large scale production sites such as homebase.com, ebay.com and amazon.com. Their prices will be comparable, making sure you get a good price, and their quality is also great. Furniture stores online may also do a white-trimmed full length mirror, however these may be a little more expensive, but usually of better quality.
Half your height
Reflected.
1/2 your height
Your image shrinks