Wiktionary
pretty as a picture
a. (context simile English) Very pretty, very cute
Usage examples of "pretty as a picture".
Another, though, would annul this evidence entirely, because (with only speechless exclamation marks on its back) here was an entire figure, a ghostly little miss in the leaves, with a trailing skirt of dew-glistening cobweb, pretty as a picture.
As they squished their way towards the river, the familiar water smells assailed Renn's nose, and there, pretty as a picture, sat Fred.
It was for a fact, all shut up as pretty as a picture, and every-time a new record would come from the mail order and us setting in the house in the winter, listening to it, I would think what a shame Darl couldn't be to enjoy it too.
She's as pretty as a picture, bright as a pin, and horny as a jackass.