J. Lo Who Wore It Best?

1. JLo Who Wore It Best? - Dita Von Teese

Round 1: Dita Von Teese

It doesn't matter whether you're in black or white; you still don't want anyone else to show up in the same Roland Mouret dress! But it's a fate that J. Lo has had to endure twice, once with Heidi Klum, and again with Miss Von Teese.

2. JLo Who Wore It Best? - Paula Abdul

Round 2: Paula Abdul 

Both of these brunette beauties, Lopez on the left and Abdul on the right, glowed in their feathery white Marchesa gowns.

3. JLo Who Wore It Best? - Posh

Round 3: Victoria Beckham

Vroom! Vroom! Mrs. David Beckham and Marc Anthony's esposa rock leather biker caps with mad attitude.

4. JLo Who Wore It Best? - Matthew McConaughey

Round 4: Matthew McConaughey

Jennifer and Matt McC both braved the waves at the celebrity studded Malibu Triathlon in their body-hugging black wetsuits.

5. JLo Who Wore It Best? - Sarah Connor

Round 5: Sarah Connor

The one-shouldered leopard dress lives on in the night lives of both the Terminator TV starlet and Jennifer Lopez.

6. JLo Who Wore It Best? - Natasha

Round 6: Natasha Bedingfield

Battle of the pop divas: both women showed up to special events in long-sleeve lace mini-dresses that emphasize their toned up gams.

7. JLo Who Wore It Best? - Ellen

Round 7: Ellen DeGeneres

Looks like the daytime talk queen was getting ready to have a "Rebirth" of her own by dressing up as an uber-pregnant La Lopez for Halloween.

8. JLo Who Wore It Best? - Cameron Diaz

Round 8: Cameron Diaz

J. Lo vamped up the sexiness factor of this white pleated Fendi dress for the launch of Deseo, while Cam went for flirty innocence at the Japanese premiere of What Happens in Vegas.