a picture of

(very) picture of something

Fig. the perfect example of something; an exact image of something. The young newlyweds were the picture of happiness. My doctor told me that I was the very picture of good health.
See also: of, picture

a (or the) picture of —

the embodiment of a specified state or emotion.
1989 Woman's Realm The…little girl looks a picture of health in her blue dungarees and red boots.
See also: of, picture