Robin Thicke — Blurred Family Lines, Brothers Talk Him Up

Two of Robin Thicke“s brothers blew into L.A. Monday … one of them looks like Robin. The other … not so much.

Here”s the tale of the tape on Alan Thicke“s spawn: Carter Thicke, the younger, uhh … smaller one … is the guy doing all the talking in the video. Brennan Thicke is the older, quieter guy in the background.

Brennan has the same mom as Robin — singer Gloria Loring — but doesn”t look as much like Robin as 16-year-old Carter. Odd, since Carter has a different mom.

Genes. Go figure.