January Jones

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January Jones may play a cold hearted be-yotch on Mad Men, but she also makes sure to look the part on the red carpet!

The 34-year-old was spotted at the Metropolitan Opera Gala Premiere of "Manon" in this YSL dress with a thigh-high slit and don't think our fave gal-pal Joan Rivers didn't have something to say about it.

"She eats her own placenta," the Fashion Police host joked. "You know how expensive that is? A lot of people can't afford it, they have to use placenta helper. We were so poor growing up, we had powdered placenta."

Want more? You're in luck! Because Joan had cracks on Leighton Meester's mom arms, Lucy Liu's vajayjay, as well as Madonna's tour of desperation and more!

Click to see all of Joan's jokes that didn't make it on air in our sassy sartorial photo gallery.

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