The music mogul shared the photo with Twitter followers, captioning it with: ‘Bath Time!’
The X Factor judge is seen gazing adoringly at his son whilst Eric enjoys his bath time fun.
Eric is seen chilling out in a green dinosaur bath boat, looking up at his millionaire dad.
Simon became a father for the first time earlier this year after it was shockingly revealed his girlfriend Lauren Silverman was expecting a baby.
Simon and Lauren began dating when Lauren was still married to ex-husband Andrew, one of Simon’s best friends.
The talent show judge has proved himself to be a devoted dad, sharing pictures of himself beaming with pride as he holds Eric, named after his late father.
Judge’s ex-girlfriend Sinitta was revealed to be Eric’s godmother, and she recently told Closer that she thinks Eric is a genius and will follow in his dad’s footsteps.
It was recently reported that Simon is hoping to have another child, preferably a girl, to complete his family.
A close friend of Simon’s recently told Closer: ‘Simon and Lauren are so happy. He loves the whole domestic scene, which I didn't think he would. Eric is a dream, he's a very quiet baby and there's a good atmosphere in the house. Fatherhood has really changed Simon - he's not the Cowell I knew!’