John Legend favourite to play at Kim Kardashian and Kanye West's wedding ...

Rihanna and Madonna are also possible options for the couple after big names turned down the chance to perform at the celebrations

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Kim Kardashian John Legend Kanye West

John Legend is leading the way as Kim Kardashian and Kanye West search for the ultimate wedding singer.

The R&B star is a close friend of the groom, and he's odds-on favourite to serenade the couple on their big day after Jay Z snubbed the ceremony entirely.

According to the latest odds from Paddy Power, John is in pole position to step up and headline the glitzy bash.

He's currently at odds of 2/1 to perform when the pair get married in Paris next month, while stunning star Rihanna follows closely behind at 5/1.

If the bookies are to believed, there are still a lot of likely options - and Kimye are unlikely to be struggling for stars willing to attend.

Still, Jay Z and his wife Beyonce did reject the invite because of all the press attention surrounding the nuptials.

They'll be doing their best to make up for it though, with reports claiming Jay and Bey will spend £100,000 on a luxury yacht of the lovers' honeymoon, as well as 'the most extravagant stag do known to man'.

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Jay Z and Beyonce will miss the big day

Madonna is also seen as an option, with odds of 25/1 along with James Blake, Chaka Khan and Lana Del Rey - although it's perhaps more likely there'll be a Girl on Fire with Alicia Keys at 6/1 to perform.

No-one should be ruled out at this stage, considering even James Franco and Seth Rogen have had to turn down an offer to perform.

The duo joined forces for a hilarious parody of Kimye's Bound 2 video and it was enough to earn them an invite, which they politely declined during a chat with Kanye.

James explained: 'Seth and I were on the phone and we thought he was going to let us have it, but he loved it and not only that, I think I can say it now because I'm pretty sure it's not going to happen, he wanted us to perform it live the night before his wedding at Versailles.'

While they were tempted by the offer, James, 36, thinks they would regret the experience.

He said: 'I think it would have been awesome for about 10 seconds and then there would be Seth with his shirt off in front by all the Kardashians.'

Paddy Power's odds for Kimye's wedding singer

John Legend 2/1

Rihanna 5/1

Alicia Keys 6/1

Coldplay 8/1

Daft Punk 10/1

Elton John 12/1

Lily Allen 12/1

Rita Ora 12/1

30 Seconds to Mars 16/1

Keri Hilson 16/1

Katy Perry 20/1

Mariah Carey 20/1

Justin Timberlake 20/1

Bruno Mars 20/1

Outkast 20/1

James Blake 25/1

Madonna 25/1

Chaka Khan 25/1

Lana Del Rey 25/1

Maroon 5 40/1

Cheryl Cole 50/1

Taylor Swift 50/1

One Direction 50/1

Jimmy Kimmel 100/1