Orlando celebrates his belle's 32nd birthday with aplomb, as they dress up for her 1950s-themed star-studded birthday bash.
And they display their similar sense of humour on Halloween when - as the US presidential election draws near - Katy dresses up as Hillary Clinton, while Orlando channels Donald Trump.
The Santa Barbara, California, native wore a helmet that matched her beau's.
Katy sat on the back of the black-and-silver two wheeler as she clung to the The Hobbit: The Battle of the Five Armies star.
They spend time apart, as Katy campaigns for Hillary Clinton's presidential campaign, while Orlando shoots his movie Smart Chase: Fire & Earth in Shanghai, China.
However, as rumours of a breakup begin to circulate once again, Katy and Orlando share shots of themselves wearing matching onesies as they reunite to spend Thanksgiving together.
In May she starts up her tour again with dates in Germany.
They're the talk of the town as they attend New York City's Met Gala wearing matching Tamagotchis.