Ashlee Simpson and Evan Ross took her son Bronx out to a Crayola event in Manhattan on Thursday evening, and the matchy matchy couple just confirmed that they'll be having a little girl later this year.

"I like to know...I want to do the nursery. I’m just excited for the new addition," Ash told Us Weekly, adding that she told Bronx "pretty early on" and her 6-year-old son with ex-hubby Pete Wentz "wanted to have a sister, so he’s really excited! He’s got a little brother. Now he’s going to have a little sister!" Aww!

Pete and his girlfriend Meagan Camper welcomed a son last year, so Bronx is already big brother to five-month-old Saint Laszlo. So now the only question is what Ash and her hubs plan on naming their little girl -- we have a feeling it's going to be something pretty out there!