Sam dresses as Sandy from 'Grease' for Kochie's 60th

It was a night of bad taste and big hair for David 'Kochie' Koch’s 60th birthday.

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All the usual Channel Seven crew were there, including: Samanatha Armytage, Natalie Barr, Mark Beretta, Larry Emdur and Kylie Gillies - with all the stars fully embracing the theme.

And, they were pretty damn proud of their efforts!

The Sunrise and The Morning Show teams all took to Instagram to show off their fancy costumes.

Sam decided to prove that Grease is still the word, taking inspiration from fellow blonde Aussie Olivia Newtown-John and donning a Sandy get-up for the event.

Meanwhile newsreader Natalie Barr went for a more grungy look, dressing up as Guns ’N Roses frontman Axel Rose.

The Morning Show host Larry Emdur admitted he had a “massive t-shirt fail”.

On his Instagram he wrote: "Of course it says Koch Rox but I must've painted it off centre so it looks like KOC ROC in all the pics .. But for the record Kochie does Rock .. Happy 60th you old fart , my sexy, nasty rock chick Sylvie and I had a blast !!! Still trying to get eye makeup off …"

Love it!

The finance guru has enjoyed a week of birthday celebrations and surprises, including a touching moment the Sunrise team surprised him by flying his UK-based daughter over to wish him a happy birthday.

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