The former Girls Next Door star and Playboy Playmate is roughly two months pregnant, a source tells the magazine.
Wilkinson, 28, and Baskett, 31, who married in June 2009 at the Playboy mansion, welcomed son Hank Randall Baskett IV several weeks before their wedding.
Since starring in her own E! reality show Kendra, Wilkinson has appeared on Dancing with the Stars, Celebrity Wife Swap and Splash — the latter which she famously quit three episodes in. She will next guest-star on Tuesday's episode of The Mindy Project.