November is shaping up to be the hottest month of the year, as the sexiest women in music grace the covers of several fashion and lifestyle magazines. From racy to pregnant and back again, Beyoncé, Rihanna and Kelly Rowland show us all how to be sexy leading up to the holiday season.

PHOTOS: All the Hottest Magazine Cover Stars

Pregnant Beyoncé Talks Maternity Line in Harper's Bazaar

A pregnant Beyoncé graces the latest cover of Harper's Bazaar. Shot by Terry Richardson, the mag has released two covers of the pop diva. On the newsstand cover of the issue, B is whipping her hair back and forth in a sparkling Reed Krakoff sequin dress and salutary dark eyes. For the subscriber issue, Queen B clutches an invisible guitar as she shakes it in a Salvatore Ferragamo-beaded jacket. Both covers are beyond gorgeous, so don't be ashamed to purchase both.

Inside the magazine Beyoncé opened up about her private life with handsome hubby Jay-Z, her pregnancy, and new maternity line, which she's designing with her mom for the House of Dereon. The singer plans to "feel edgy and sexy" during her pregnancy and to create clothes for other expecting moms who long to be sexy during their pregnancy. "Flowy fabrics are always flattering," she says, "but I still rock my stilettos." Soccer moms watch out, B's new line is sure to create a whole new wave of sexy pregnant ladies. Is a pregnant belly the hottest accessory for fall?

Rihanna, the 'Sexiest Woman Alive,' Gets Naked for Esquire

Esquire has named Rihanna the "Sexiest Woman Alive" for its November issue, and Ri is living up to the title on the cover. Completely naked and covered in dirt and green leaves, a fierce (and wet) Rihanna gives a salutary stare to readers. Although the singer looks stunning, I wish there was more fashion elements in the shoot. Perhaps, even just a killer necklace to go with that sweet little pinky ring.

Kelly Rowland Goes Retro in British Cosmopolitan

Kelly Rowland looks retro chic on the cover of the November issue of British Cosmo. Inside the mag, Ms. Rowland told the mag she's "thrilled" with the results of a breast augmentation surgery she underwent a few years back and was tired of having "little nuggets for boobs." Showing off her new assets, the singer flashes readers wearing a dazzling red silk bra from MC Lounge, black leather shorts, and a cropped military jacket with red piping. At ease soldiers, this songbird has a current crush on UK "X Factor" judge Gary Barlow.