One Direction Openers Icona Pop on Louis Tomlinson's Baby: 'We Will Be the Nannies on Tour'

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April 24: Caroline Hjelt (L) and Aino Jawo of Icona Pop Celebrate Bring Your Kid To Work Day at Music Choice in New York City. 

When Icona Pop heard Tuesday (July 14) that One Direction's Louis Tomlinson is going to be a dad, they couldn't be more shocked -- or excited -- for him.

"Oh my God, congrats to him," Caroline Hjelt told Billboard. "We are happy for him if he's happy. We are very good nannies. We love babies."

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Hjelt and her singing partner, Aino Jawo, are currently the opening act for One Direction as they make their away across the U.S. on the guys' On the Road Again 2015 tour. Tomlinson is expecting a baby with 23-year-old hairstylist Briana Jungwirth, Billboard confirmed Tuesday.

"We don't have time for kids," Jawo says, laughing. "We borrow kids."

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Icona Pop, best known for their dance hit "I Love It," said they are enjoying touring with 1D and will continue playing on the tour until early August.

"We will be the nannies on tour," Hjelt says. "Best wishes for him."

Stay tuned to Billboard.com for more from Icona Pop in the coming days.