Elton John and George Michael's friendship took a turn for the worse when the 'Rocket Man' singer insulted him by saying he needed to "get out more".

When Elton John insulted George Michael by saying he needed to "loosen up"

Elton John waves goodbye

Elton John's husband and children wave him goodbye in heartwarming moment at final live show

David Bowie

The greatest songs about space, from David Bowie to Chris de Burgh

Elton John - Farewell Yellow Brick Road

Elton John bids emotional farewell at final ever live show after five years on the road

Celebrities from Paul McCartney to Lewis Hamilton watched the superstar's perform as the festival's 'Legacy' act, however it was support from Elton John's family that no doubt buoyed up the singer's performance.

Elton John's rarely-seen sons Zachary and Elijah pictured at Glastonbury with dad David Furnish

During his final ever UK performance at Glastonbury Festival, Sir Elton John paid a poignant tribute to his dear friend George Michael.

Elton John pays tribute to "friend" and "inspiration" George Michael with heartfelt Glastonbury performance

So who exactly could be joining Elton John during his final ever UK live show at Glastonbury Festival?

Elton John at Glastonbury: Four special guests confirmed - but who were they?

Elton John's 'I'm Still Standing' video

The Story of... 'I'm Still Standing' by Elton John

Elton John and David Furnish are proud fathers of Zachary, 8, and Elijah, 6.

Elton John's husband and children: Inside their family life and incredible love story

Elton John's best songs

Elton John's 20 greatest ever songs, ranked

Here's all you need to know about Elton John's iconic ballad 'Goodbye Yellow Brick Road'.

The Story of... 'Goodbye Yellow Brick Road' by Elton John

Elton John

The Story of... 'Your Song' by Elton John

Here are 10 trailblazing artists that have made the LGBTQ+ community more visible in the world through their music.

10 iconic popstars who broke LGBT boundaries

1970s songs

The 100 greatest songs of the 1970s, ranked

Kate Bush surprised everyone when she appeared at Elton John's 2014 wedding.

When the elusive Kate Bush stole Elton John’s limelight after attending his wedding

George Michael tops Smooth's All Time Top 500 for 2023

George Michael tops Smooth's All Time Top 500 for the sixth time - see the full chart