Even though we mourned the loss of Jennifer Lopez's fabulous "American Idol" style, the singer hasn't seemed to slow her fashion pace since leaving her hosting gig. But, in addition to her outfit choices, it seems that people have been paying close attention to her hair (see: the mild internet frenzy that started after ambiguous photos were released of Jennifer with a possibly-cropped 'do).

Over the weekend, we couldn't help but take notice of the actress' particularly stunning locks. We think we may have even spotted J.Lo's new favorite hairstyle, since the singer decided to wear quite similar looks for two appearances during her tour in Las Vegas. For her pre-concert party, the 43-year-old rocked white hot pants and a matching crop top. Her hair was worn in a sleek half-up, half-down style that harkened back to her "Jenny From The Block" days (the sunglasses didn't hurt either).

Following her performance, Jennifer arrived to the after-party in a bright blue dress. This time, she ditched the shades and wore her hair in a curly teased version of the same style. Obviously, Jennifer looks gorgeous no matter what she does to her hair (ahem), but which iteration of the half-up, half-down look do you prefer? Check out the photos below and tell us what you think.

Quick Poll

Which hairstyle do you prefer?

VOTE

Pre-Party Hair...

jennifer lopez hair

After-Party Hair...

jennifer lopez hair

See Jennifer Lopez's style evolution!

Loading Slideshow...
  • January 1994

    (WireImage photo)

  • January 1995

    (WireImage photo)

  • August 1996

    (WireImage photo)

  • March 1997

    (WireImage photo)

  • March 1997

    (WireImage photo)

  • April 1997

    (WireImage photo)

  • June 1997

    (WireImage photo)

  • September 1997

    (WireImage photo)

  • September 1997

    (WireImage photo)

  • January 1998

    (WireImage photo)

  • March 1998

    (WireImage photo)

  • May 1998

    (WireImage photo)

  • June 1998

    (WireImage photo)

  • September 1998

    (FilmMagic photo)

  • October 1998

    (WireImage photo)

  • October 1998

    (WireImage photo)

  • February 1999

    (WireImage photo)

  • March 1999

    (WireImage photo)

  • May 1999

    (WireImage photo)

  • June 1999

    (WireImage photo)

  • September 1999

    (WireImage photo)

  • December 1999

    (WireImage photo)

  • February 2000

    (Getty photo)

  • September 2000

    (Getty photo)

  • September 2000

    (AFP photo)

  • November 2000

    (Getty photo)

  • April 2001

    (WireImage photo)

  • March 2001

    (Getty photo)

  • October 2000

    (WireImage photo)

  • January 2001

    (WireImage photo)

  • January 2001

    (WireImage photo)

  • January 2001

    (WireImage photo)

  • February 2001

    (Getty photo)

  • February 2001

    (Getty photo)

  • March 2001

    (Getty photo)

  • March 2001

    (Getty photo)

  • May 2001

    (WireImage photo)

  • April 2002

    (WireImage photo)

  • May 2002

    (Getty photo)

  • November 2002

    (WireImage photo)

  • February 2003

    (WireImage photo)

  • March 2003

    (WireImage photo)

  • July 2003

    (WireImage photo)

  • December 2003

    (WireImage photo)

  • September 2005

    (WireImage photo)

  • September 2006

    (WireImage photo)

  • March 2007

    (WireImage photo)

  • October 2007

    (WireImage photo)

  • March 2009

    (WireImage photo)

  • April 2010

    (FilmMagic photo)

  • September 2010

    (WireImage photo)

Want more? Be sure to check out HuffPost Style on Twitter, Facebook, Tumblr and Pinterest.