as cute as a button: adorable
E.g. The Smiths new baby is cute as a button in their family photo. That outfit is just adorable.
Katie was as cute as a button and the boys were starting to notice her.
(all) decked out: to be dressed up or decorated in a special way/for a special occasion
E.g. The children were decked out for Halloween as a fire man and a lion.
Men like to deck their cars out before they go on a date so that they can impress the ladies.
to dress to kill/dress to impress: to wear very fashionable or glamorous clothes intended to attract attention.
E.g. She arrived at the party dressed to kill. Everyone was looking at her.
We received an invitation saying “No jeans, no sandals. Dress to impress!”
face only a mother could love: humorous way of saying that someone is unattractive
E.g. I feel bad for him – the poor guy has a face only a mother could love.
She heard that her new colleague has a face only a mother could love. She did not care about his appearance as long as they could work well together.
to look/feel like a million dollars: to look great
E.g. With your new hairstyle and make up you look like a million dollars!
After a week vacation and relaxing spa visits, I feel like a million dollars.
(all) skin and bone: very/too thin
E.g. He was ill for a long time and now he is all skin and bone.
Grandmothers always say that their grandchildren are skin and bone and need to eat more.
(as) pretty as a picture: very attractive
E.g. The newlyweds looked pretty as a picture in their wedding photos.
Their new house in the country looked as pretty as a picture. There is a certain charm about these cottages.