So much leather, so much gel. All the pictures from Kochie's big birthday bash.

Kochie has turned the big 6-0!

As a national treasure, Kochie’s birthday milestone is momentous. Boasting an illustrious career in both business and the media, Kochie has been the host of Sunrise for over a decade now, and we honestly don’t know what our mornings would be like without him.

Watch Mia Freedman interview Kochie on ‘No Filter’ (post continues after video).

To celebrate his big day, Koch gathered his closest friends and family (including the Sunrise crew and a heap of Channel 7 personalities) in the heart of Sydney.

Rest assured – he wasn’t about to throw a birthday bash without a killer theme.

And while his new rocker hair ‘do is perfection, we had to give the ‘best dressed’ award to Sam (Sandra Dee) Armytage.

Scroll through the party pics below and tell us who you think made the best rock star.

Tell me about it stud… On my way to #kochies60 #onj ????????

A photo posted by Samantha Armytage (@sam_armytage) on Mar 12, 2016 at 12:54am PST

Angus Young, Scary Spice, Sandy …. & the -Rox Koch-Emdurs @markberetta @rachberetta @larryemdur @sylviemdur #kochies60 ???????????????????????? A photo posted by Samantha Armytage (@sam_armytage) on Mar 12, 2016 at 3:30am PST

Feeling every bit of 60 this morning. My perfect birthday party. Great Family, great friends and fabulous music. Furnace And The Fundamentals were just incredible

A photo posted by Kochie_Online (@kochie_online) on Mar 12, 2016 at 3:13pm PST

Johnny and June off to @kochie_online 60th A video posted by Edwina Bartholomew (@edwina_b) on Mar 12, 2016 at 1:11am PST

Rock chicks. Kochie’s Big Bash. #kochies60th Squad! Nat, Kyles, Melissa, Sylvie, Rach, Sam.

A photo posted by Kylie Gillies (@kyliegillies) on Mar 12, 2016 at 1:36am PST

???????????? @sam_armytage !! #kochiesbirthday A photo posted by Kylie Gillies (@kyliegillies) on Mar 12, 2016 at 11:06pm PST

Hope it was the most rockin’ birthday ever, Kochie!