This legendary singer looks completely unrecognisable as he dresses up as Posh Spice - but can you guess who this rocker is?

He is part of one of the top-selling bands of all time and is a three time Grammy Award winner. 

But this music star, 61, looked worlds away from his usual rocker self as he dressed up as Victoria Beckham - ake Posh Spice in a throwback snap.

The singer, who was inducted into the Rock and Roll Hall of Fame in 2012, was joined in the picture by his two bandmates as they performed to the Spice Girls.

The rocker and his band, who were formed in the 80s, landed their first number one song Give It Away in 1999.

They have since received a star on the Hollywood Walk of Fame in 2022 - but can you guess who is pictured?

This music star, 61, looks worlds away from his usual rocker self as he dressed up as Victoria Beckham as he and his three time Grammy Award winning band perform as the Spice Girls in a throwback snap

Did you guess correct? It is none other than founding member and lead vocalist of the rock band Red Hot Chili Peppers, Anthony Kiedis. 

He was joined by bandmates Flea, 61, real name, Michael Peter Balzary, who transformed into Baby Spice (Emma Bunton) and John Frusciante, 54, as Sporty Spice (Mel C). 

The singer proved to go up and beyond for his friends as he transformed into Posh Spice for Flea's daughter Clara's 10th birthday back in 2017. 

Flea had Clara. now 35, with ex-wife Loesha Zeviar and he is also dad to and 18-year-old Sunny Bebop with Frankie Rayder. 

He welcomed his third child with his now wife, Melody Ehsani in December, 2022.

Anthony wore a black strapless crop top and miniskirt and completed Victoria's iconic look with a black short bobbed wig.

Meanwhile Flea donned a pink mini dress and a blonde wig as he dressed up as Emma Bunton and John donned a sports tracksuit copying Mel C's style.   

Sharing the throwback snap to Instagram, Flea wrote: 'When we did a Spice girls performance for my daughter Clara's 10th birthday. 

'John- sporty, anthony-posh, me- baby and the great chris warren was scary spice but sadly he is cropped out of this photo, trust me he looked beautiful. We practiced our moves seriously and gave the kids our best performance!'

The throwback snap comes as it was revealed earlier this year that an Anthony Kiedis biopic is in the works at Universal Pictures.

Did you guess correct? It is none other than founding member and lead vocalist of the rock band Red Hot Chili Peppers, Anthony Kiedis

He was joined in the photo by bandmates Flea, 61, who transformed into Baby Spice (Emma Bunton) and John Frusciante, 54, as Sporty Spice (Mel C)  - pictured with Chad Smith in 2022

The singer proved to go up and beyond for his friends as he transformed into Posh Spice for Flea's daughter Clara's seventh birthday back in 2017

Flea shared this picture of himself with his daughter Clara from another birthday celebration

The rights to his 2004 memoir Scar Tissue has been optioned by the movie production company, with Kiedis set to produce the feature film.

The movie - which is currently in early development - will also be produced by Brian Grazer, and Guy Oseary, reports Deadline.

The rights to the frontman's 2004 memoir Scar Tissue has been optioned by the movie production company, with Kiedis set to produce the feature film

Scar Tissue went to the number one spot on the New York Times bestseller list when it was first released in 2004. 

In Kiedis' acclaimed book, he wrote about his unconventional relationship with his father, who was addicted to drugs and shared them with his son.

The tome also covers the passing of founding Red Hot Chili Peppers guitarist Hillel Slovak, who died of a heroin overdose aged 26.

But Kiedis has previously admitted he had regrets about penning the memoir, which once caused a rift with his bandmate Flea after he revealed in the book he had slept with his friend's sister.

In 2016, Kiedis told The Sun: 'I did regret the book for a while as there was some pain caused. But then, I started seeing the long-term positive reverberating. People were reading it in hospitals, in prisons and schools and it was having a positive effect.

'I realized that the whole point of writing that book wasn't for me, but to show that somebody can go all the way down and come all the way back and have a productive, successful happy interesting life.

'And so whatever shame, pain or difficulty or discomfort I went through, then it was worth it because I get so many people coming up to me saying their kids had read it and got their act together because of it.'

Kiedis has fronted the multi platinum selling band since they formed in the late 1980s, frequently aappearing shirtless on stage during concerts.

Kiedis has fronted the multi platinum selling band since they began performing in the late 1980s

During the band's heyday, Kiedis regularly performed shirtless. He is pictured a Slane Castle in Ireland in 2001

Pictured L-R Flea, Chad Smith, Anthony Kiedis and John Frusciante in 1990

He was born in Grand Rapids, Michigan, and raised in Los Angeles from the age of 12.

He spent much of his musical career writing lyrics about his experiences in the city. 

Kiedis co-founded Red Hot Chili Peppers with guitarist Slovak, bassist Flea (Michael Balzary) and drummer Jack Irons in 1982.

The group has sold over 120 million records sold worldwide, scored nine Top 10 albums, won six Grammys and was inducted into the Rock and Roll Hall of Fame in 2012.

In his memoir Kiedis revealed he accidentally tried heroin for the first time at age 14, mistaking it for cocaine.

He was in a relationship with Heather Christie from 2004 to 2008. They have one son, Everly Bear Kiedis, 16.