Taylor Swift fans were treated to a performance from one of the star's BFF's in Washington DC last night, when Lorde rocked up to join the latest leg of Swift's 1989 World Tour. 

She later shared this photo, telling fans: "When your friend flies across the world to surprise your crowd with 'Royals' because she's a wondrous angel."  

Meanwhile Lorde posted a similar shot on her Instagram, with the caption: "Looking over at my girl like "can u believe this is the kind of fun stuff we get to do for a living" THANKS TAY AND D.C. GETTING TO SING FOR U TONIGHT RULED."

Channel 4's planning its first ever adaptation of a Twitter feed - developing the account Very British Problems into a three episode show. 

Each hour-long episode's expected to share the narrative and tone of the feed - which teams plenty of weather chat with some delightfully British awkwardness.

Chris Fouracre from production company Alaska said: “Our intention is to make a warm, inclusive, funny show that gently unravels the complexities and awkwardness of the British psyche, through the real lives of some of our best loved comedians and personalities."

The Drum reports, external stars like James Corden, Ruth Jones and Steven Mangan are on board. 

Love it or loathe it, Cheerleader is having another good week after topping the Billboard Hot 100 chart, external in the US.

Tim Masters
Arts and Entertainment correspondent

Image source, Helen Maybanks

"Two years ago I wouldn't have imagined doing this," admits Stephen Merchant, on the opening night of The Mentalists at Wyndham's Theatre in London's West End.

Best known for co-writing and directing TV series The Office, Merchant's role as an angry, frustrated middle manager in Richard Bean's dark comedy marks his debut as a stage actor.

Bean has even tweaked his 2002 play to make reference to Merchant's West Country accent.  

"I was always intimidated by the thought of learning the lines. Now I've done it I've been tantalized by staying in character - unlike in TV and film where it's a very bitty process," says Merchant.

So is he considering doing more stage work alongside TV, films and stand-up?  

"At the moment I'm so tired. It's exhausting. It's basically people on stage shouting. So I won't be able to tell you that until I've finished the run. 

"Don't expect my Macbeth anytime soon." 

Soap fans have been reacting to last night's Coronation Street double bill, which featured the funeral of much-loved character Deirdre Barlow. 

Anne Kirkbride, who played Deirdre for more than 40 years, died in January aged 60.

Tim Masters
Arts and Entertainment correspondent

Image source, John Williams

Six-time world champion speed-reader Anne Jones, external read Go Set a Watchman in 25 mins and 31 seconds at Forum Books in Corbridge, Northumberland. 

“It’s been mayhem at the book shop,” she told me shortly after finishing the novel and a busy round of TV and radio interviews.

She described Watchman as a "page turner" that was "really funny in places".

"To Kill a Mockingbird is a perfect book," she concluded. "Go Set a Watchman doesn’t quite reach that standard, but it is a great read in itself."

She plans to read Harper Lee's new novel again at her leisure: "Normally I’d be reading this in two 45 minute bursts with a cup of tea in between." 

Not had your fill of comic book movies yet this week? Footage of the new Suicide Squad movie leaked after Comic Con, but now Warner Bros and DC Comics have officially posted the first look trailer online. 

The film features a squad of villains working to save the world - including Margot Robbie as Harley Quinn, Will Smith as Deadshot and Jared Leto as The Joker - and it looks pretty dark. 

Suicide Squad is due in cinemas in August 2016.