Selma Blair may be a mommy, but the newly single star isn't afraid to show those California men what she's got.

The 40-year-old actress flashed some serious sideboob while out shopping in West Hollywood on September 29. The "Anger Management" star risked having a wardrobe malfunction as she left the Marc by Marc Jacobs store, pushing the front door open and allowing onlookers to get a sneak peek at her assets.

Blair may not have known that her striped dress showed off a bit too much, but she didn't appear to care.

She ended things with her boyfriend of two years, fashion designer Jason Bleick, 42, last month. The couple have a 14-month-old son, Arthur, together.

Check out pictures of Blair's sideboob below:

selma blair sideboob

selma blair sideboob

Loading Slideshow...
  • Angelina Jolie

    Loaded Magazine, August 2000

  • Jennifer Aniston

    GQ, December 2005

  • Cameron Diaz

    Cosmopolitan, June 2011

  • Jessica Biel

    W Magazine, March 2012

  • Gwyneth Paltrow

    Harper's Bazaar, March 2012

  • Lauren Conrad

    Glamour, May 2012

  • Anne Hathaway

    New York, March 2005 (Photo Credit: Getty Images)

  • Anne Hathaway

    New York, March 2005 (Photo Credit: Getty Images)

  • Giselle Bundchen

    New York, May 2008 (Photo Credit: Getty Images)

  • Giselle Bundchen

    New York, May 2008 (Photo Credit: Getty Images)

  • Lindsay Lohan

    Los Angeles, July 2009 (Photo Credit: Getty Images)

  • Lindsay Lohan

    Los Angeles, July 2009 (Photo Credit: Getty Images)

  • Lindsay Lohan

    Malibu, July 2009 (Photo Credit: Getty Images)

  • Lindsay Lohan

    Malibu, July 2009 (Photo Credit: Getty Images)

  • Katy Perry

    Los Angeles, January 2010 (Photo Credit: Getty Images)

  • Katy Perry

    Los Angeles, January 2010 (Photo Credit: Getty Images)

  • Audrina Patridge

    Las Vegas, May 2010 (Photo Credit: Getty Images)

  • Audrina Patridge

    Las Vegas, May 2010 (Photo Credit: Getty Images)

  • Rachel McAdams

    London, January 2011 (Photo Credit: Getty Images)

  • Rachel McAdams

    London, January 2011 (Photo Credit: Getty Images)

  • Rosie Huntington-Whiteley

    London, June 2011 (Photo Credit: Getty Images)

  • Rosie Huntington-Whiteley

    London, June 2011 (Photo Credit: Getty Images)

  • Diane Kruger

    Beverly Hills, December 2011 (Photo Credit: Getty Images)

  • Diane Kruger

    Beverly Hills, December 2011 (Photo Credit: Getty Images)

  • Calvin Klein

    1992

  • American Apparel

  • American Apparel

  • Jil Sander

    Fall 2010

  • Guess Jeans

    Spring 2012

  • Julianne Hough

    (Getty photo)

  • Gwyneth Paltrow

    (WIreImage photo)

  • Mischa Barton

    (Getty photo)

  • Miley Cyrus

    May 2012