Taylor Swift has played fairy godmother with her fans again, helping a couple tell the world that they're expecting their first baby.

The 25-year-old star joined Jesse and Lindsey Rasmussen for a Twitter pic at her gig in Louisville, Kentucky, and held up a handwritten sign saying: "Baby's first concert."

Thank you so much @taylorswift13 helping me tell the world IM GOING TO BE A DAD! #BabiesFirstConcert @lindseyjo86 pic.twitter.com/8135go8e3e

— Jesse Rasmussen (@JesseRas) June 19, 2015

And in case people didn't get the message, the parents-to-be also held up little print-outs from their ultrasound and Lindsey pointed at her tummy and smiled.

Radio presenter Jesse explained: "It wasn't until we got the ultrasound pictures that we thought of having them and the sign that said 'Baby's First Concert.' My wife Lindsey is a kindergarten teacher, so I left all of the creative sign making up to her.

"We had the sign and the pictures with us sort of hidden just in case we chickened out. We were both kind of nervous. Then she walked into the room and just started hugging people.

"That was the cool thing. She didn't just sort of shake your hand and say hi. She comes up and hugs you and thanks you first.

"I just kind of blurted it out. 'Hey we're having a baby! Can you help us tell everyone?' She seemed so surprised and touched by the request. There wasn't a hint of hesitation.

"She thought it was so cool!"

As if my day couldn't get any better. Just got this from Thank You/Congrats Card from @taylorswift13 #Thankful pic.twitter.com/4QV4rKs5RV

— Jesse Rasmussen (@JesseRas) June 19, 2015

And Tay-Tay also went to the trouble of writing a lovely note to the couple after the event, thanking them for letting her share their special news.

Now that's good manners!