Meryl Streep keeps it casual in head-to-toe black as she attends the star-studded revival of hit Sondheim musical Follies at the Royal Albert Hall

With one of her best friends and colleagues up on the stage, Meryl Streep was of course in the audience to cheer her on.

The Hollywood star attended the one-off Follies In Concert revival at the Royal Albert Hall in London on Tuesday evening, beaming with joy as her pal and fellow actress Christine Baranski performed in the star-studded show.

Meryl looked thrilled to be one of the star guests at the special musical event, as she crept in through the back door of the iconic London concert hall.

A-list attendee: Meryl Streep was the guest of honour at the special one-off revival of Stephen Sondheim's Follies at London's Royal Albert Hall on Tuesday

A-list attendee: Meryl Streep was the guest of honour at the special one-off revival of Stephen Sondheim's Follies at London's Royal Albert Hall on Tuesday

The 65-year-old flashed her winning smile as she made her way to her seat in one of the prestigious boxes, looking lovely in black skinny jeans, a long black coat with a red blouse on undernearth.

She kept it casual for her night at the theatre, her blonde hair worn loose and with her glasses in place.

The Oscar-winning actress joined the likes of Brian May, Lorraine Chase, Patrick Kielty and Jonathan Ross.

The show - one of just two, the first of which included a matinee performance on Tuesday - was a revival of the hit musical in honour of iconic composer and lyricist Stephen Sondheim's 85th birthday this year.

Out in support: The Hollywood icon was one of many guests at the gala evening for the legendary show, as she went to support her good friend and former movie co-star Christine Baranski

Out in support: The Hollywood icon was one of many guests at the gala evening for the legendary show, as she went to support her good friend and former movie co-star Christine Baranski

Star players: Acting legends Stefanie Powers (left) and Christine Baranski (right) made up the star-studded cast

Star players: Acting legends Stefanie Powers (left) and Christine Baranski (right) made up the star-studded cast 

Impressive line-up: As well as Christine and Stefanie, the performers included Anita Dobson, Lorna Luft, Ruthie Henshall and Alastair McGowan, among others

Impressive line-up: As well as Christine and Stefanie, the performers included Anita Dobson, Lorna Luft, Ruthie Henshall and Alastair McGowan, among others

'It's worthwhile': Stefanie Powers recently spoke of her joy at being involved in the landmark revival, held in honour of Stephen Sondheim's 85th birthday

'It's worthwhile': Stefanie Powers recently spoke of her joy at being involved in the landmark revival, held in honour of Stephen Sondheim's 85th birthday

Big change: He may be known for his celebrity impressions, but Alastair McGowan showed off his acting salt up on stage in Follies

Big change: He may be known for his celebrity impressions, but Alastair McGowan showed off his acting salt up on stage in Follies

As well as starring Meryl's Mamma Mia! and Into The Woods co-star Christine, it also featured the talented and esteemed likes of Stefanie Powers, Russell Watson, Anita Dobson, Ruthie Henshall, Alastair McGowan and Lorna Luft.

The revival of the hit Sondheim musical, which began on the Broadway stage back in 1971, was directed by Strictly Come Dancing stalwart Craig Revel Horwood, and the talented man took to the stage after the show to take his bow. 

The musical is best known for its well-known classic songs Losing My Mind, Could I Leave You?, Broadway Baby and I'm Still Here.

Leading ladies: Betty Buckley (left) and Lorna Luft (right) were some of the star performers at the revival of the musical, which first began in 1971
Leading ladies: Betty Buckley (left) and Lorna Luft (right) were some of the star performers at the revival of the musical, which first began in 1971

Leading ladies: Betty Buckley (left) and Lorna Luft (right) were some of the star performers at the revival of the musical, which first began in 1971

Flowers for everyone! The cast and crew - including the show's director Craig Revel Horwood (centre) looked thrilled as they celebrated the end of their brief two-show run

Flowers for everyone! The cast and crew - including the show's director Craig Revel Horwood (centre) looked thrilled as they celebrated the end of their brief two-show run

Stunners: Lorna Luft (left) and Christine Baranski looked lovely in little black dresses as they mingled after the show

Stunners: Lorna Luft (left) and Christine Baranski looked lovely in little black dresses as they mingled after the show

Icon: Meryl Streep had attended the evening to watch her good pal and co-star Christine do her thing up on stage

Icon: Meryl Streep had attended the evening to watch her good pal and co-star Christine do her thing up on stage

And it tells the tale of two couples - Buddy and Sally Durant Plummer and Ben and Phyllis Rogers Stone - who look back over their lives during a reunion, while in a deteriorating old theatre on Broadway, New York.

The original production ran for 522 shows in the 1970s, before closing due to financial difficulties, but it was briefly revived on Broadway in 2001.

It also went on in other iterations in Los Angeles and in London's West End in the late 1980s, where it ran for over 600 performances at the Shaftesbury Theatre. 

Support: Queen rocker Brian May was also there, to see his wife Anita Dobson in the show

Support: Queen rocker Brian May was also there, to see his wife Anita Dobson in the show

They've earned it! Anita and Lorna let their hair down after the gala event, sipping on champagne

They've earned it! Anita and Lorna let their hair down after the gala event, sipping on champagne

Still dancing: Acting legend Anita Harris couldn't stop with the moves even after appearing on stage

Still dancing: Acting legend Anita Harris couldn't stop with the moves even after appearing on stage

Lads' night out? Patrick Kielty (left) and Jonathan Ross (right) were some of the celebrity guests at the Follies In Concert event

Lads' night out? Patrick Kielty (left) and Jonathan Ross (right) were some of the celebrity guests at the Follies In Concert event

The one-off celebration of Sondheim's life and works included the matinee performance, followed by the star-studded gala evening on Tuesday. 

After the impressive performance, the litany of famous faces who had graced the stage mingled with the celebrity guests at the post-show soiree. 

Last week, Stefanie Powers, 72, appeared on This Morning to discuss the iconic stage return of Follies, in which she had a starring role.

'It's about 1,000 years of professional experience going to be on that stage, including Christine Baranski and many, many well-known people,' she explained.

'It's such a large scale show that it's very seldom ever done and it's now being done as a concert version, so it's possible to do it.

'It's going to be an extravaganza, and I think everybody who comes will really feel it's worthwhile.' 

Suits you: Actress Lorraine Chase went for a 1980s androgynous look for the evening in her oversized trouser suit

Suits you: Actress Lorraine Chase went for a 1980s androgynous look for the evening in her oversized trouser suit

Spousal support: Alastair was joined by his wife Charlotte Page at the after-party

Spousal support: Alastair was joined by his wife Charlotte Page at the after-party

Birthday celebration! Brian carried birthday cards for his wife Anita, who celebrated her 66th birthday the day after the big performance

Birthday celebration! Brian carried birthday cards for his wife Anita, who celebrated her 66th birthday the day after the big performance

Acting veterans: Anita let her hair down with pal Lorraine as she clutched a bouquet of flowers

Acting veterans: Anita let her hair down with pal Lorraine as she clutched a bouquet of flowers

 

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