Velasquez Venus at her Mirror (The Rokeby Venus), 1649-51
A Photographic version can be seen here:
photo version of Velasquez' Venus at her Mirror by Andre Maier of New York. Looking at those family portraits, I'm guessing it might've been family members in his photo.
TV-theme parody; "Museum of Depressionist Art":
"Mirror, Mirror Off the Wall" (with a tie-in to TV, for which there is also a motifs page here).
This was on a postage stamp in Austria
Titian, Venus with a Mirror, c. 1555
Motifs and Traditional Art
Tree of Knowledge Motif