Peter, who is set to take to the dance floor for this year's Strictly Come Dancing, was joined by his wife Emily and the rest of the Andre clan to celebrate the impressive milestone.
Sharing several snaps of the night, the Australian singer told his fans: "Mum and dad celebrating their 60th wedding anniversary :))
My love for them is too much for words."
In one giant group shot, which Peter posted on Instagram, wife of two months Emily can be seen stood alongside his relatives in a swish restaurant.
And peeking out in the bottom of the snap is a little girl, believed to be their daughter Amelia.
The couple welcomed Amelia into the world in January 2014 but she is rarely seen in public.
Is this adorable tot their little bubba?!
Meanwhile, Peter has been busy brushing up on his dance moves ahead of the new series of Strictly, which kicks off tonight.
Peter has already revealed that Emily is "giving him grief" on deciding to do the reality show.
He recently said: "I'm not gonna hear the end of it by the way. She's already sending me pictures of sparkly outfits with smiley faces at the end, she's giving me grief already." Oh dear!
Check out our gallery below to see who Peter will be competing against this year!