It was a family affair!

Miley Cyrus and fiance Liam Hemsworth spent Father's Day with her parents Billy Ray and Tish dining on sushi at Nobu in Malibu, and the group seemed as laid back as can be on the holiday. The "Wrecking Ball" songstress dressed down in jeans and running shoes for the occasion, and her man followed suit in shorts and sneakers.

The couple has been so low-key about their relationship, a lot of fans think they've already secretly tied the knot! The singer's close pal Wayne Coyne of the Flaming Lips recently gave opened up about their romance, and he says they're just down to Earth stars trying to live a normal life.

"They’re such a great combination. You can be around them and do absolutely normal, dorky things. Trying to figure out where we’re going to eat tonight and what’s on Netflix. I know that sounds boring, but sometimes that’s the height of great living, relaxing with your friends," Coyne told Us Weekly.

We know Miley's mom and dad are big fans of the Aussie actor and the way he treats their daughter, so he's lucky to be on the good side of his future in-laws!