This is going to be tough.

Two beautiful woman with amazing figures wearing the same Elie Saab Fall 2009 dress.

I love how this electric blue Elie Saab dress pops on both of them, and how it pulls them both in at the waist with what appears to be an invisible corset.

Beyonce Knowles wore this dress back in April last year when she made an appearance on the Late Show with David Letterman.

She added a lot of gold to her look pairing her dress a multitude of gold bangles, gold earrings, and a golden pair of Ruthie Davis Odyssey platform heels.

Dita von Teese kept her look very simple when she arrived at the Elie Saab Spring 2010 Couture show in Paris this week.

Sparkling heels and trademark red lips and nails completed the look.

Dita left me breathless in this look, and the colour contrast against her alabaster skin is amazing so she just wins for me.

Credit: Style.com & PA