Having twice locked horns through legal action, it is safe to say Simons Cowell and Fuller are not the best of friends.
But the music industry titans will need to put their feud aside when attending Mel B‘s wedding in London tomorrow.
The ceremony at St Paul’s Cathedral will see the Spice Girl, 50, tie the knot for the third time, with hairstylist Rory McPhee, 37.
And the bride is thought to have invited the warring music managers, who have been enemies for decades.
Fuller, 65, is regarded as the most successful British music mogul of all time and managed The Spice Girls at their height – which drew deep jealousy from Cowell, also 65, who had turned the group down.
The pair clashed when Pop Idol creator Fuller launched a £100million lawsuit against Cowell after he set up similarly formatted The X Factor.
Having twice locked horns through legal action, it is safe to say Simons Cowell and Fuller are not the best of friends
But the music industry titans will need to put their feud aside when attending Mel B’s wedding to hairstylist Rory McPhee, 37, in London on Saturday (seen together)
They reached a settlement but the battle erupted again in 2011 over producer credits.
Fuller is set to arrive alone, while Cowell will attend with fiancée Lauren Silverman.
A source said: ‘I’m sure everyone involved will behave impeccably.’
It comes as Victoria Beckham shared a gushing wedding tribute to Mel B after it was revealed she wouldn’t be at her fellow Spice Girl’s nuptials.
The fashion designer, 51, will be absent from Scary Spice’s nuptials on Saturday because she is out the country.
However, Victoria was keen to show that Mel, 50, was still in her thoughts as she took to her Instagram Stories to share a sweet tribute just hours ahead of the big day.
Posh Spice posted a photograph of herself and Mel looking glamorous together at a recent event as she sent her well-wishes to the happy couple.
She gushed in a caption: ‘Sending love to you @officialmelb! @rorymcphee is a very lucky man! xx’
The Daily Mail exclusively revealed earlier this week that neither Victoria or Geri Halliwell would be at Mel B’s nuptials.
Fuller, 65, is regarded as the most successful British music mogul of all time and managed The Spice Girls at their height – which drew deep jealousy from Cowell (seen), also 65, who had turned the group down
Spice Girls seen with Simon
There is also a suggestion that another member of the band, either Emma Bunton or Melanie Chisholm, are also not going.
Sources said Victoria will be abroad, with one explaining: ‘Victoria has long standing plans out of the country and she simply can’t be there.
‘She adores Mel, they get on really well despite their paths going in opposite directions. It’s a real shame.
‘There is no issue between them, they haven’t fallen out. It’s just one of those things.’
As for Geri, she and Mel have a tempestuous relationship and at times have struggled to be in the same room without there being animosity.
The two women went to war after Mel B revealed that she had an intimate relationship with Geri when the band was starting out while she was being interviewed for Piers Morgan’s Life Stories programme.
Geri was deeply upset by the bombshell revelation in 2019, for which Mel has apparently never apologised.
Sources also said that Geri’s husband Christian Horner was ‘mortified’ about Mel’s claims.
Neither Victoria or Geri attended Mel’s 50th birthday in Leeds back in May. Just Emma and Mel C were in attendance.
It is the third time that Mel will say ‘I do’ after first marrying Dutch backing dancer Jimmy Gulzar in 1998.
For her big day, Mel wore a Vegas showgirl-style feathered headdress with a white and gold dress.
And when she wed Stephen Belafonte in 2007, they eloped to Las Vegas before holding a vow renewal in Egypt the following year.
Mel and Stephen separated in 2016.
Mel grew close to Rory after the breakdown of her marriage to Stephen.
Last year, she said: ‘He’s a family friend, great hairdresser… when I went back to England, he would come over and give me hair treatments…
‘And as he was nurturing my curls back, I guess he was nurturing my trust and belief in a relationship.’
It comes as Victoria Beckham shared a gushing wedding tribute to Mel B after it was revealed she wouldn’t be at her fellow Spice Girl’s nuptials
She is able to marry Rory at St Paul’s Cathedral because of her OBE, which she got in 2022 for her services to charitable causes and vulnerable women, especially Woman’s Aid
She is able to marry him at St Paul’s Cathedral because of her OBE, which she got in 2022 for her services to charitable causes and vulnerable women, especially Woman’s Aid.
Mel B celebrated her upcoming wedding with a sun-soaked hen party in Tunisia, featuring leopard-print bikinis, a choreographed dance routine, and a ‘Zen party’.
Her daughter Phoenix and 35 friends joined in the festivities, which included a lavish menu and dancing by the ocean.
The hen party also included a leopard print themed night, as well as a belly dancing class.
