The reality TV star announced her happy news to fans on Twitter earlier today (31 October) by posting a photo of her pregnancy test, which of course could be seen bearing the word 'pregnant'.
She also wrote the caption: "Round two. Here we go!! :) #ClearblueConfirmed"
The photo shows 28-year-old Kendra with no make-up on, as she holds up the test with a huge smile on her face.
She and former American football player Hank married in 2009 and are already parents to three-year-old Hank Junior.
Earlier this year the trio were seen looking like a picture perfect family on the red carpet at a film premiere in Hollywood.
Kendra - who rose to fame as one of Hugh Hefner's girlfriends - revealed at the star-studded film screening that she and her hubby were in the process of trying for baby number two.
Congratulations Kendra and Hank!