Lily Allen fans have vented their frustration after being charged up to £86 for a 50-minute performance with no support act. The Hammersmith-born singer, 41, performed her West End Girl tour at the O2 on Saturday and Sunday with a third show scheduled for July 7.The critically acclaimed album explores the emotional fallout of the Smile hitmaker's split with Stranger Things actor David Harbour. West End Girl chronicles the breakdown of their over five-year relationship through 14 songs and has a run time of 44minutes. The concert does not have a support act, with fans instead encouraged to join a 'karaoke session' of Lily's biggest hits accompanied by a live orchestra. Tickets for the West End Girl Tour ranged from £38 to £86.The show attracted criticism from some fans this week, who argued the ticket price was too steep for just 50 minutes of singing. Others bemoaned the lack of audience engagement, with the singer only returning to the stage after the final song to wordlessly accept a bouquet of flowers. Lily Allen fans have vented their frustration after being charged up to £86 for a 50-minute performance with no support act (pictured, Allen backstage at the West End Girl tour) The critically acclaimed album explores the emotional fallout of the Smile hitmaker's split with Stranger Things actor David Harbour (pictured, a moment from a show in Chicago) The show attracted criticism from some fans this week, who argued the ticket price was too steep for just 50 minutes of singing (pictured, fan reaction to the tour on X)'Lily Allen at The O2: *No support act *Arrived on stage at 9:10pm *All wrapped up by 10pm *Not one word to the audience,' one fan wrote on X. 'Totally understand the frustration,' a second wrote. 'It was clearly billed as a theatrical album performance rather than a full hits show, but for arena prices on a Sunday night, some audience acknowledgement or slightly longer runtime would've gone a long way.''Lily Allen showing up late, playing 50 minutes with no interaction and charging £86? Fans got robbed,' a third agreed. A fourth said: '50minutes is not acceptable for an evening at the O2 at those prices. Should have had support for sure.''Went to see her in Newcastle and was more shocked at the fact she didn't say thank you for coming and just came back out without her mic and got handed a bunch of flowers,' another said. However, others argued the West End Girl tour had been billed as a highly theatrical, narrative-driven experience for fans rather than a greatest-hits show. Allen herself told Vogue the show was 'unlike anything I've done before'. Allen (pictured backstage) herself told Vogue the show was 'unlike anything I've done before' But other fans argued the West End Girl tour (pictured) had been billed as a highly theatrical, narrative-driven experience for fans rather than a greatest-hits show'On previous tours, the shows have been about my personality and my interaction with the audience. This show can feel more like theater at times,' she said. 'There's a lot of attention to detail and storytelling through props, costume, and lighting. There is an intensity that I'm really proud of and enjoying.'And fans were quick to agree with the singer. 'I think you have to approach the tour as it's intended,' one said. 'It's much more of a live reenactment of a concept album than it is a conventional concert. She's providing you [with] almost a theatre experience rather than glow sticks and jumping.''Was not meant to be a regular concert. Sounds like she did as all promo and interviews said she would,' a second agreed. 'It's literally being promoted as Lily Allen performs "West End Girls",' a third said. 'The orchestra was clearly the support act, so I'm not sure why anyone expected something different.'It comes after Harbour branded his ex-wife's album 'weird' as he discussed reaction to the record during an interview with Variety earlier this month. Other fans were quick to defend the tour on XThe hit song Madeline saw Lily accuse Harbour of having a three-year affair with a younger costume designer as she appeared to suggest the couple had an open arrangement in regards to sex, as long as it was not based on emotional connection.The actor said: 'It was weird. I do believe that it is the privilege of every artist to use their experience to create art, and so I respect her for doing that. I can’t really say that much more, because it’s my private life.'In spite of the fact that a lot of people don’t allow me a private life - I value it. And I also value the lives of the people that I interact with privately. I just won't speak about that. Stories are complex, and that’s why I say I respect her creation of art to channel her experience. It wasn’t my experience.'Allen previously stressed that her 14-track album, which was written in 10 days last December consists of a 'mixture of fact and fiction', adding that fans shouldn't take the lyrics and their meaning as 'gospel'.She is next scheduled to perform in Ireland on June 30 and July 1 before taking the tour to a handful of European festivals. Allen will kick off the North America run in September before performing in Australia, New Zealand and South America.