The Apprentice honcho tweeted his theory today (1 Aug) while pointing out to his followers that Simon has been out of the showbiz spotlight recently.
Lord Sugar said: "Why do get the feeling the news of @SimonCowell fathering a child is one big publicity stunt as he has been out the limelight for a while?"
Simon has not replied to Lord Sugar's tweet.
Why do get the feeling the news of @SimonCowell fathering a child is one big publicity stunt as he has been out the limelight for a while— Lord Sugar (@Lord_Sugar) August 1, 2013
Yesterday, a US magazine reported that Simon is expecting a baby with American socialite Lauren Silverman, who is married to his friend Andrew.
Simon has remained silent about the claim and although Reveal contacted his reps, they have not yet responded.
Earlier today, we revealed how Simon's ex-girlfriend Sinitta had cryptically tweeted about a "half miracle and half nightmare" on Monday.
Although she didn't reference Simon or a rumoured pregnancy directly, the timing was rather interesting...
Simon Cowell may or may not be having a baby, but these stars definitely are!
Copyright: Vimeo / Weiss Eubanks