To look picture perfect means to look exactly correct or right.
Having an appearance or quality that is exactly right.
1. Damon and Liz’s wedding was picture perfect.
2. There’s nothing better than a picture perfect party table.
3. You have a picture perfect family now that the baby has arrived!
4. She is flawless and always picture perfect!
absolute, faultless, flawless, ideal, immaculate, impeccable, indefectible, irreproachable, letter-perfect, picture-book, seamless, unblemished