Jessica Simpson's bun in the oven is destined to be a hole in one, if the name she's reportedly selected tells us anything.

A source close to the singer and "Fashion Star" mentor revealed to Us Weekly that she and fiance Eric Johnson, a retired NFL tight end, have selected Ace as the baby's name. Simpson has not yet disclosed her reason for choosing the name.

Simpson and Johnson had their first child, Maxwell, in May 2012. Maxwell, now 10 months old, was named after Simpson's mother's maiden name and Johnson's middle name.

Simpson revealed she was pregnant for a second time this past December, confirming the news via Twitter on Christmas Day. She was spotted out and about with Maxwell on Monday.

We'll see how conservatively Simpson decides to dress throughout this second round. She made headlines during her first pregnancy for wearing form-fitting, scanty outfits not commonly associated with maternity dress.

Related on HuffPost:

Loading Slideshow...
  • Christina Aguilera

    Aguilera is reportedly expecting her second child, her first with fiance Matthew Rutler.

  • Scarlett Johansson

    The actress is reportedly expecting her first baby with fiance, Romain Dauriac.

  • Mila Kunis

    Kunis is reportedly expecting her first child with fiance Ashton Kutcher.

  • Lake Bell

    Actress <a href="" target="_blank">Lake Bell is pregnant</a> with her first child with husband Scott Campbell.

  • Gabby Hoffman

    "Girls" actress <a href="" target="_blank">Gaby Hoffmann is expecting</a> her first child with cinematographer boyfriend Chris Dapkins.

  • Stacy Keibler

    Keibler is expecting her first child with new husband Jared Pobre.

  • Siri Pinter

    Carson Daly and longtime love Siri Pinter are expecting their third child.

  • Snooki

    Snooki is expecting her second baby with fiance Jionni LaValle.

  • Alyssa Milano

    Milano is expecting her second child, a baby girl, with husband David Bulgari.

  • Christina Ricci

    The actress is expecting her first child with husband James Heerdegen.

  • Rachel Bilson

    Bilson is reportedly expecting her first child with longtime boyfriend Hayden Christensen.

  • Kristen Bell

    Bell is expecting her second child with Dax Shepard.

  • Kourtney Kardashian

    Kourtney Kardashian is <a href="" target="_blank">pregnant with her third child</a> with partner Scott Disick.

  • Eva Mendes

    Mendes is reportedly expecting her first child with boyfriend, Ryan Gosling. Hey girl, we know, <em>we know</em>.