Westlife are panning a stadium tour of Ireland and the UK for next year, it has been reported.
The boyband are in Dublin as 160,000 concert-goers prepare for two of their sold-out Croke Park shows.
Despite the their popularity, members of the music industry are said to be shocked at the demand for tickets for Westlife's The Twenty Tour.
And this want for tickets could see Shane Filan, Mark Feehily, Kian Egan and Nicky Byrne playing at outdoor gigs across the UK and Ireland in 2020, the Irish Sun reports.
An insider said: "The reaction to Westlife's comeback has been off the scale.
"We knew the guys were still popular but even industry people have been astonished at how many tickets they've sold on this tour. All this for a band coming back after seven years away."
A source added: "Westlife would be crazy to stop touring at this point. Not only are the tickets selling but the reviews for their comeback shows have been excellent."
Fans of the boys are to be treated with sunny spells and high temperatures for their Dublin concerts.
Sunshine and highs of 22C are forecast for the capital, as concert-goers descend on GAA HQ on Friday and Saturday.
After some drizzle on Friday afternoon, the sun is to break out in the evening.
A Met Eireann forecaster said: "Early bright or sunny spells will soon give way to increasing cloud this morning, with perhaps the odd spot of drizzle.
"But some bright or sunny spells will break through again towards evening.
"Highest temperatures of 19C to 22C. Winds will be light and westerly, with local sea breezes near the coast."
Those at the show wishing to go out afterwards will enjoy a mostly dry and mild summer night.
A forecaster added: "Dry with clear intervals at first tonight, but cloud will gradually increase as the night goes on, with the chance of a few patches of light rain or drizzle developing.
"Mild with lows around 11C or 12C degrees in mostly light west or northwest breezes."
Unfortunately, Saturday won't be as nice but afternoon temperatures may be as high as 21C.
It's looking to be a more cloudy day with patchy rain but dry and sunny condition should reach Dublin by the late afternoon - just as fans are heading to the stadium.
A Met Eireann forecaster said: "Rather cloudy to start the day on Saturday with patchy rain, drizzle and mist.
"Drier and sunnier weather will soon develop in Ulster and this dry and bright weather will extend slowly southwards to much of Connacht and north Leinster during the afternoon.
"However, holding mostly cloudy elsewhere with further patchy outbreaks of rain. Maximum temperatures of 17C to 21C in mostly light northwest breezes."
