And clearly the actress isn't letting a little thing like pregnancy get in the way of her busy work schedule, hitting the promotional trail yesterday in not one, not two, but three gorgeous maternity frocks.
Yesterday the soon-to-be Mrs Matt Bellamy was snapped arriving for an appearance on The Late Show with David Letterman, wearing a breezy white summer dress, teamed with nude blazer and towering Louboutin courts.
Post appearance, and Kate had performed a frock swap, posing for the cameras in a sweet dotty monochrome number and black suede peep-toes.
The mum-to-be also made a quick pitt-stop to chat to Matt Lauer on The Today Show, showing off that burgeoning bump in a figure-hugging sky blue minidress and leg-lengthening nude heels.
And the ultimate accessory? That blinding diamond engagement ring. What a rock!
Which of Kate's three looks gets your vote? Let us know below.
See more stylish celebrity baby bumps here: