But not only can Niall nail a Southern accent: The pair agreed that he also looks a lot like Blake.
Gwen, 54, joked, “You could be our son,” as a picture of the two musicians appeared on the screen behind them.
“I’m the weird stepson,” Niall responded. “We actually do minus a few gray hairs. I’ll take that.”
But all jokes aside, the 30-year-old had nothing but good things to say about his former costar.
“I got on very well with Blake,” he recalled. “I met him the day before we started shooting the blinds. We went for a drink the day before and I sat down with him for five minutes and I was like ‘This is my guy. I’m sticking with him.'”
Niall added, “They put me next to him for the whole season and we had such a laugh. What you see with Blake is what you get. On camera, off-camera, he’s just the nicest guy in the world. Loves what he loves and just has a great time doing everything. He’s just the best.”
The former No Doubt singer cheekily chimed in, “I think I’m going to stick with him, too.”