Katy Perry Will Wear at Least Seven Gowns at Wedding!

Katy Perry Will Wear at Least Seven Gowns at Wedding!

When Katy Perry weds beau Russell Brand in India this fall, expect plenty of costume changes. A source tells Us Weekly that Perry, 25, will wear at least seven custom-made Zuhair Murad gowns!

In this week's Hot Stuff video, Senior Editor Ian Drew -- plus singer/actress Katharine McPhee! -- reveal more details on the kooky couple's bridal extravaganza, including a very, very famous bridesmaid.

Also in the roundup: Carrie Underwood's Las Vegas bachelorette party, exes Demi Lovato is "talking crap about" ex Joe Jonas, and more.

Watch the video now (above)!