Plum Perfect: Michelle Obama wears Isaac Mizrahi to SOTU

American designer Isaac Mizrahi is over the moon about Michelle Obama's dress choice for the State of the Union address.  Why? Because she wore his dress!

Mizrahi said in his video blog that he thinks Mrs. Obama looked "exquisitely beautiful" in the dress, and that he was "thrilled" to learn that she'd worn it. 

"It was the right dress at the right time, which is what fashion is all about," Mizrahi gushes about the First Lady's choice. It was "not left, not right; it was kind of a bipartisan dress," because it was purple, a combo of red and blue.

In the video, Mizrahi is all giddy Mrs. Obama's whole look, noting that her new bob hairstyle is "divine" and "really gorgeous."

Oh, and lookie here below.  Mizrahi isn't the only one who thinks Michelle looks hot in purple.