The boys are back and flying without wings once again.
Westlife kicked off their world tour last night in Belfast, the first time they've played live in seven years.
The band said they were "ecstatic" and "emotional".
Speaking immediately after the performance at Belfast's SSE Arena last night, they said: "We genuinely missed each other and missed the buzz of performing on stage together. It is incredible to be back. The Belfast crowd were unbelievable.
"We're ecstatic and we loved every minute of it. It was emotional at times, too.
"It was amazing to see everyone singing along to our new music and other hits."
The boys' triumphant return came as two of the Spice Girls arrived in the capital yesterday, ahead of the girl band's opening night of their world tour at Croke Park tomorrow night.
Melanie Brown and Melanie Chisholm arrived into Dublin Airport from a British Airways flight just before 3pm.
Emma Bunton and Geri Horner are expected today as they gear up to rehearse ahead of tomorrow's show.
The quartet are believed to be staying in the Intercontinental Hotel in Ballsbridge.
Mel B - aka Scary Spice - posted a picture at London's Heathrow Airport of herself and 'Sporty Spice' Mel C before their departure for Dublin.
"Me and @melaniecmusic have arrived just now at the airport in proper 'Spice Girl spirit' - I even had a sleepover at Sporty's last night, yippee we are soooo on time it's killing me," she wrote as a caption.
More than 75,000 fans are expected to descend on Croke Park for the band's first Irish gig in 21 years. Organisers predict the highly anticipated concert will generate more than €40m for the capital, in what will be the first female pop group headline performance in GAA HQ.
The Spice World 2019 tour will also feature 12 shows across the UK, ending at London's Wembley Stadium. The Dublin show will be the girls' first time performing together since the closing ceremony of the 2012 London Olympics.