Justin Timberlake’s Baby Booze Reward!

Justin timberlake sq

Party boy-turned-doting daddy Justin Timberlake gets a special prize from wife Jessica Biel for taking care of their 6-month-old son — two cold beers before bed!

The brew-loving singer-actor, who has served as a celebrity pitchman for Bud Light Platinum, has largely become a stay-at-home dad since the couple welcomed their first child, Silas, in April.

Because JT, 34, no longer paints the town red with his party posse, a friend said Jessica, 33, doles out a two-beer prescription to her hubby after Silas has settled down for the night!

“It’s become a running joke,” the friend said.

“Justin can get a little worked up between feeding time, changing diapers and trying to keep Silas amused, so Jessica cheers him on, saying, ‘Keep your eye on the prize — it’s nearly beer time!’”