Music artist Brad Paisley reveals he doesn't really know what advice he can give to good friend and country singer Carrie Underwood, who has recently become a mother to Isaiah Michael Fisher.

He recalled how when Underwood was pregnant, she asked Paisley for some parenting tips but he admitted that he has "no clue" what to advise the new mum.

"I have no clue what to tell her," Paisley told CMT. "I've gotten a few of texts from Carrie... like, 'Who's your pediatrician?' And, 'How do you do that?' Or, 'What's this?'"

Paisley explained that his kids Hunk and Jasper get to be with their mother at home while he's out touring, so he sympathises with the prospect of his good friend having to tour with baby Isaiah.

"I cannot imagine what it would be like if she's got a weekend with three shows, and she'd have to just leave breast milk in the fridge. That would be rough," he said.

Paisley will be the opening act for the Rolling Stones on June 17 in Nashville, and Underwood was admittedly pretty eager to score some tickets to the show.

On her Instagram account (@carrieunderwood), the country Christian singer wrote, "This is awesome! I wanna go!!!!! Brad, hook a girl up with tickets!"

Paisley could not resist teasing his friend and gave her a "no", but he quickly added: "Now, if she wants to come sing 'Remind Me,' I could. Not a bad idea huh?"

Paisley made the opening act announcement on his Instagram account (@bradpaisley), and wrote: "So proud to warm up for the greatest rock band in the world June 17, LP Field - @TheRollingStones Zip Code Tour"

Right after that, Paisley said that he and his family were bombarded with phone calls from other family members, friends, and even strangers, hoping they could get some free tickets.

"There's people I don't know that called my father," Paisley shared, adding, "It's never a good indicator when they say 'Do you remember me?'"