The Spice Girls and Robbie Williams are among the stars lending their support as Oasis kick off their tour tonight.
Rock star brothers Liam and Noel Gallagher are set to share the same stage for the first time in 16 years as the Oasis Live 25 tour opens at the Principality Stadium in Cardiff, Wales.
As Britpop fans eagerly await the reunion, some of Oasis' 90s chart rivals have wished them luck ahead of the gig.
The Spice Girls' Mel C famously challenged Liam at the Brit Awards in 1997, by shouting on stage, "I just wanna say, Liam, come and have a go if you think you're hard enough!"
Earlier today, Mel reposted a clip of the footage on The Spice Girls' official Instagram account and added the cheeky message: "Still waiting @liamgallagher. Good luck with the tour boys."
Former Take That star Robbie has made no secret of his excitement ahead of the Oasis reunion tour.
On Friday, he took to social media to reveal a photo of a fake blue plaque on Berwick Street in London, which was the setting for Oasis' (What's The Story) Morning Glory? album cover.
Robbie's plaque read: "Robbie Williams - heard it, saw it, loved it, lived it, wanted it and snorted it ... That's The Story."
The Angels singer also shared an image of two blurred out people on the famous street to recreate the iconic 1995 album cover.
He accompanied the shots with the caption: "GOOD LUCK TONIGHT LADS @oasis."
After striking up a friendship with Liam and partying with him at Glastonbury in 1995, Robbie landed himself in a long-running feud with the brothers after Noel branded him "the fat dancer from Take That ". Robbie even challenged Liam to a fight during his appearance at the Brit Awards in 2000.
However, after the Oasis tour was announced last year, Robbie insisted there were no hard feelings and revealed he expected the live shows to be "off-the-scale special".
