First-time mom Victoria Prince is getting great on-the-job training, by playing stepmom to Kevin's four kids!

Victoria can be seen hanging with Kori & Kaleb (K-Fed's kids with Shar Jackson) and Jayden James & Sean Preston after his baseball game Sunday, where she looks like a natural!

Photogs congratulated the couple on their impending bundle of joy (which Kevin has confirmed is a little girl) and the new parents-to-be couldn't be happier!

Wonder if Britney is as thrilled for the couple as we are?

Check out our monster gallery of Kevin, Victoria, Britney, Jason, Jayden and Sean below!