In the snap posted to Twitter last night (19 June), Simon can be seen gazing adoringly at four-month-old Eric, who is lying on a bath cradle while wrapped in a green towel.
X Factor boss Simon, who welcomed baby Eric with his partner Lauren Silverman in New York City on Valentine's Day (14 February), has stretched out his arm out to tend to the tot who looks up at his face.
Eric's such a cutie!
Simon, who has returned as a judge for this year's X Factor, simply captioned the photo: "Bath Time!"
Simon and fellow judges Cheryl Cole, Louis Walsh and Mel B kicked off auditions in Manchester on Monday to begin their search for the next biggest singing sensation.
Taking to Twitter last night (19 June), Simon declared: "This is going to be a fun year on X Factor."
Fatherhood has certainly showed off Simon's softer side, and he recently admitted that he "would be ok" if Eric wanted to try out to be a singer.
"I'll tell him straight if he can't do it," Simon told The Sun. "Admittedly, I might not be quite as blunt as I am with some of the contestants!"
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