Lopez, 46, uses a database to help her pick her outfits, reported the New York Daily News.
"She had her feet up at a meeting, and someone noticed that she had a bar code on her shoe and asked her if she borrowed them.
"Jennifer laughed and said no, that she has her own internal bar code system on all of her closets to digitally keep track of what she wore and when she wore it, so that she isn't caught wearing the same thing twice," a source said.
And to keep everything in control, the singer has hired someone to look after her wardrobe full-time.
