Prince Harry was reportedly spotted lapping up some theatre last night, supporting a new festival based underground near London's Waterloo. The Vault Festival is billing an adaptation of Hunter S Thompson's Fear And Loathing In Las Vegas as one of its headline events, and - if the celeb-spotters on Twitter are right - the fourth in line to the throne had bagged a front row seat.
We all know the naughty Prince knows a bit more than most than the ups and downs of Sin City after he stripped naked at a private party while enjoying the delights of Vegas in August 2012. The pictures unfortunately got onto the internet with everyone given a look at the cheekiest royal's bum.
Luckily, or unluckily for Harry fans his butt was covered during his theatre visit, where Twitter users took to the social network to reveal the royal guest.
Prince Harry (WENN)
One audience member wrote: "Delightful evening watching Fear and Loathing at #VaultFestival. Bit surprised to see Prince Harry right in front."
"Best celeb spot so far - Prince Harry at Fear & Loathing show #wildturkeyuk," another posted.
There was no mention of Harry's girlfriend Cressida Bonas though. The couple have previously enjoyed theatre dates including a performance of The Book Of Mormon last year.
The adaptation, which has bagged a 4-star review from The Telegraph, runs until March 8, with tickets relatively reasonable at £25 a go.
Fear And Loathing is part of the Vault Festival (Twitter/Vault)
Lou Stein's adaptation of what is described as "one of the wildest, most vibrant and utterly essential books of our time" leads the six-week Vault Festival's second year in operation.
Harry, meanwhile, is due to stand in for his grandmother, Queen Elizabeth II, at a Westminster Abbey service honouring Nelson Mandela on Monday, March 3.