NOV. 21, 8PM
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Gwen Stefani

Alberto E. Rodriguez/Getty Images

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Gwen Stefani is really working some exhibitionist couture and taking side boob to a whole new level. Maybe this outfit is some kind of kinky foreplay for her hot hubby, Gavin Rossdale?

The No Doubt rocker let it all hang out at the L.A. premiere of Paul McCartney's music video for his single "My Valentine" in this Stella McCartney jumpsuit and Louboutin heels. But you can't show that much skin and not expect our gal-pal Joan Rivers to notice!

"I knew Gwen had soul," the Fashion Police host joked. "I didn't know she literally had a small black woman trapped inside of her."

Want more? You've come to the right place! Joan had cracks on Melody Thornton's see-through dress, Rihanna's flasher style, Angelina Jolie's engagement circus and more!

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