The 45-year-old actress was making an appearance on The Ellen DeGeneres Show when she decided to show off her figure in a pair of bright yellow pants.
Shaking her bottom at the camera, Cate put the underwear on over the top of her smart blue Roksanda trouser suit after being handed the garment by hunky topless male model.
The whole scenario seemed to really excite Cate and she couldn't stop smiling as she pulled her best modelling pose in the briefs.
As she wiggled her derrière, the group of men looked on and laughed.
Cate Blanchett yellow pants Ellen
It was quite an eventful interview for Cate, as she also played a game with Ellen where she had to identify the lips of some leading men she has worked with in the past.
"You've worked with a lot of talented actors," Ellen told her. "And I thought we'd play a game... you've kissed a lot of people and we're going to show you lips."
"Oh it's not a***s, we're looking at lips," Cate replied, using an American accent.
"Which do you identity with more?" Ellen said, with Cate responding: "Let's do lips. Because we don't have a lot of photos of a****s around here. I will after this if you want to see my P.A.'s a***s."
Cate immediately identified Leonardo DiCaprio's lips as he was her 2004 co-star in The Aviator.
However, she failed to recognise Alec Baldwin's lips and Owen Wilson's too.
"I'm, not going to show you anymore,' Ellen laughed. "I don't know what you're going to say."