JUSTIN AND KATY'S CAPITOL IDEA

LOVEBIRDS Justin Trudeau and Katy Perry are already planning to tie the knot, and they’ve even decided who they want to officiate — California governor Gavin Newsom!

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The couple has a job for Gov. Gavin Newsom, a source says

Of course, the pop tart, 41, and the 54-year-old former Canadian prime minister aren’t engaged yet — they’ve been dating less than a year — and he’s still in the process of introducing Katy to his family and friends, an insider spills.

But when the time comes, “Gov. Newsom is absolutely their first choice to officiate the nuptials,” the snitch says.