Alicia Keys knows a thing or two about wowing a crowd.


The singer bared her midriff in a sexy cut-out dress while performing at at the 2013 Global Citizen Festival in New York's Central Park yesterday (Sept. 28) before heading to the grand opening of TAO Downtown NYC in the exact same look. Keys turned heads on the red carpet, posing with her husband Swizz Beatz who looked handsome in a black suit.


Keys mingled with party-goers at the star-studded event, which brought out celebrities including Katie Holmes, Cameron Diaz, Sofia Vergara, Gerard Butler, Debra Messing and Brooke Shields.


See her eye-catching look below:


alicia keys


alicia keys



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  • Katy Perry


    Katy Perry showed up at the 55th Annual Grammy Awards on Feb. 10 with a boob window so wide, even <a href="http://www.huffingtonpost.com/2013/02/10/ellen-degeneres-katy-perry-grammys-2013_n_2659221.html">Ellen couldn't help but gawk</a>.




  • Kelly Rowland


    Kelly Rowland defied all logic when she showed up to the Grammys in a dress that had more slits than fabric, yet still managed to look <em>hottt</em> and avoid any nip slips (or worse!)




  • Jennifer Lopez


    Leave it to J.Lo to channel Angelina Jolie -- and one-up her. Lopez's high slit dress had us worried we might get an unwanted sneak peek at her hoo-ha, but the lady is clearly a pro and she pulled off walking around in that thing like it's nobody's business.




  • Rihanna


    RiRi's dress at the Grammys was supposedly on point with CBS' requests, but up close you could totally see her nipples. Accident? When Rihanna is involved, we think not.




  • Samantha Barks


    "Les Mis" actress Samantha Barks had a pretty inventive way of showing off her tatas at the Elle Style Awards Feb. 11, with this square-ish peek-a-boo window.




  • Ashley Greene


    The "Twilight" beauty attended the amfAR New York Gala on Feb. 6 showing an odd bit of skin that revealed much without revealing anything at all.




  • Alicia Keys


    Keys' Grammy performance with Maroon 5 was electrifying, but we couldn't help feeling uneasy during the show for fear her underboob would go into full "boob exposure" mode.




  • Alicia Keys


    The gorgeous lady is a repeat offender and even when she wasn't onstage, she walked the red carpet in a dress that was somewhere between elegant and S&M.




  • Alicia Keys


    Did we say repeat offender? Yeah, we meant it. At the 2012 MTV European Music Awards the singer bared her toned, beautacious bod in an unusual way.




  • Anja Rubik


    Remember when supermodel Anja Rubik put her hip bones on display at the 2012 Met Gala? Her obscenely high leg slit almost made us forget she's got one across her chest, too.




  • Zosia Mamet


    The breakout star of "Girls" was a guest on "Late Night With Jimmy Fallon" and made it quite difficult for the host to concentrate with her strategic slit.




  • Miley Cyrus


    Cyrus attended Clive Davis' Pre-Grammy Gala Feb. 9 and opted for a dress a bit too small on top... Unless she was going for massive sideboob, in which case, good going Miley!




  • Kim Kardashian


    The reality maven is not one to hide her growing baby bump or her moneymaking girls. Kim arrived at LAX Feb. 7 wearing a sheer blouse that left very little to the imagination.




  • Ashley Greene


    The actress is also a repeat offender, seen here baring her back during Fashion Week in New York City.




  • Ashley Greene


    Hmm... Not her best look yet? Greene went bandeau to the CFDA/Vogue Fashion Fund Awards and let her toned abs steal the spotlight.




  • Lady Gaga


    We expect nothing less from the Gaga, who showed up to the "Lady Gaga x Terry Richardson" book launch party wearing her underwear. Oh, and this thin, see-through lace bit, but who's even looking at that?




  • Gemma Cairney


    Another puzzling boob window at the Elle Style Awards, this time courtesy of Britain's Gemma Cairney.




  • Gemma Arterton


    Arterton presented at the BAFTAs on Feb. 10 and played a sort of guessing game with us -- is she, or isn't she showing?!




  • Melissa Benoist


    The "Glee" star attended the Golden Globes with a dress that would make the rest of us stand with our hands on our hips the whole night, for fear our love handles will come bursting through.




  • Kelly Osbourne


    Ditto the fashionista, who walked the red carpet at the Grammys in a cutouts clearly meant to show off her newly rocking physique.