My baby already has favorite song

Kelly Osbourne has been a reality TV star, a singer, and now she’s adding another role to her long resume: a DJ. 

“I have done DJing before, but it was more like making a playlist and hitting play and dancing around,” Osbourne, 38, told The Post.

“I can’t claim to be a good DJ at all. The house DJ –  DJ Irie – was showing me a few things. It took me a minute to get across all the equipment, but by the end, I had it under control.”

Osbourne is joining Fox’s music game show “Beat Shazam ” (returning Tuesday at 8 p.m.) as the guest DJ who puts on songs. The show’s contestants guess their titles, in order to win money. 

She’s stepping in to the sixth season to fill in for the usual “Beat Shazam” DJ, Corinne Foxx. Nick Cannon is filling in to for the show’s usual host, Jamie Foxx. 

The father/ daughter duo stepped away from the show amid Jamie Foxx’s ongoing unspecified heath crisis (although he is reportedly out of the hospital and on the mend in physical rehab). 

“It was such an honor to be asked to step in and keep Corinne’s seat warm,” said Osbourne.

“It was an incredible experience, to see how just through knowing music, you can actually change your life. The amount of money I saw people win was mind-blowing. Seeing the psychological switch of ‘Oh, I don’t have to do that second job anymore’ or ‘Oh, I can pay my debt off’ is a beautiful thing to witness.” 

She said her time on “Fashion Police” best prepared her for this show. 

“I was Joan [Rivers’] little apprentice for almost 5 years, and it was the best education I ever got. The number one thing she told me was just, ‘Be yourself.’ That’s what I was kept telling myself when I went into this. I know I’m going to look back and think, ‘Oh my God, your embarrassing dance moves!’ and it will be cringe for me to watch. But, I had the best time.” 

Osbourne is currently a new mom to baby boy Sidney, who she had with her partner, “Slipknot” DJ Sid Wilson, 46. 

She said she didn’t ask Wilson for DJ advice because “I didn’t even want to hear it,” and she also didn’t ask her famous musician dad Ozzy Obourne, 74, for advice about joining a music show. 

“No, I did not [ask Ozzy]. God only knows what he would have said!”

But, she did take her baby to set with her. 

“What was so great about doing this show as well is they let me bring him to set every day, and I would have Sidney cuddle breaks, where I’d go run, cuddle him, and go back to set,” she said.

“[Being a mom] is the best thing that ever happened to me, it’s given me so much purpose and meaning in life. I love my son more than I love anything in the world. He’s my everything.”

He’s even developing his own taste in music already, she said.

“His favorite song is a song I play for him when he’s in the bath, and it makes him smile. It’s Louis Armstrong and Ella Fitzgerald ‘Cheek to Cheek.’ He loves it. After he gets out of the bath, we have a little dance. I sing it to him every night.” 

Up next, Osbourne is also going to participate in another reality show with her brother Jack and parents Sharon and Ozzy, in the BBC series “Home To Roost.” It’s been twenty years since their first reality show, “The Osbournes,” which aired from 2002-05 on MTV. 

“It took me a minute to get back into the swing of it, but it’s like putting on an old pair of comfy shoes,” she said. 

“We fell back into it, even though it’s been 20 years. It was really interesting to see. Because we are all a bit stiff in the beginning. But then we relaxed, like ‘let’s be ourselves and let’s do this.’”