Iggy Azalea, James Corden get fancy and try on wedding dresses

James Corden’s “Carpool Karaoke” took a turn for the matrimonial Thursday night when he invited rapper Iggy Azalea to go wedding-dress shopping.

The Aussie rapper, who is set to marry the L.A. Lakers’ Nick Young next year, indulged “The Late Late Show” host when they happened upon a bridal boutique during their drive. Of course, that part came after the prerequisite karaoke to Azalea’s hits, including “Fancy” and “Black Widow,” which they fit between wedding-planning questions.

Apparently, Young wants R. Kelly to perform at their reception so he could sing “Marry the ...,” and Iggy’s BFF Demi Lovato will serve as one of four bridesmaids, the rapper said.

The 25-year-old songstress also promised that Corden could officiate her ceremony if he got ordained, and the proposition had him a bit misty-eyed.

That wasn’t the only time Corden’s emotions overwhelmed him during the 8-minute bit: The pair made their way into a wedding-dress shop so Iggy could try on gowns for the first time.

“It’s always hard when I have a big butt,” the bottom-heavy rapper said in the changing room.

“Tell me about it,” Corden quipped. “Who do you think you’re talking to?

But the host appeared to want to do more than officiate: He practiced walking her down the aisle in her voluminous gown and had to hold back the tears. To remedy that, he decided to sort out his own outfit, which then led him to take on the role of the bride and try a gown on himself, veil and all.

“Oh with the veil, I just look amazing,” he said after walking out in a beaded confection. “We’ll take ‘em, we’ll take both of them!”

And they sure did, right back into the car.

Follow me on Twitter @NardineSaad.