dressed (up) like a dog's dinner
Dressed in very showy clothes that attract negative attention. Look at that fool, all dressed up like a dog's dinner. Who told him that patterned suit was a good idea?
dressed up like a dog's dinner
If someone is dressed up like a dog's dinner, they have taken a lot of trouble to dress in their best clothes. Are you telling me that your mother is going to be dressed up like a dog's dinner tonight and every night? Note: This expression is usually used to show that you think the person looks foolish.