Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

Pretty

Pretty as a Pingree potato patch.
—Anonymous

Pretty as a red wagon.
—Anonymous

Pretty as a September peach.
—Anonymous

Pretty as a picture.
—Anonymous

She was as pretty as the spring time.
—Honoré de Balzac

Pretty as a peach
Such as school boys always long for when they’re hangin’ out of reach.
—Phœbe Cary

A little girl, pretty as an angel.
—Hendrik Conscience

Pretty as a seraph.
—Théphile Gautier

Pretty as a rosebud debutante.
—Amy Leslie

Pretty as a diamond flush.
—Alfred Henry Lewis

Pretty as Paint.
—G. F. Northall (Folk Phrases)

Pretty, like a toy cowboy with a chamois shirt and a nine-dollar sombrero.
—Edgar W. Nye