Nicole Scherzinger shows up to Cheryl Cole's concert after-party baring more cleavage than the leading lady

It was a big night for Cheryl Cole, who took her A Million Lights tour to London's huge O2 Arena.

But as she's done before - seemingly time and time again - Nicole Scherzinger swept along and stole the Newcastle's beauty limelight at the very last moment.

Gold dust woman: Nicole really knocked it out of the park in this little number

Battle of the boob tubes: Nicole Scherzinger showed off enough cleavage to upstage Cheryl Cole at her own concert after-party tonight

Protective: Cheryl was steered into the club, just off London's Park Lane, by her boyfriend Tre Holloway

Scherzinger, 34, famously replaced 29-year-old Cheryl on the panel of the X Factor USA last year after Cole had filmed at just few auditions.

It was a huge slap in the face for the Girls Aloud star; but both women insisted that there was no bad blood between them as a result of the move.

Now, of course, Scherzinger is sitting pretty on the panel of the UK show, where Cheryl made her transition to nation's sweetheart.

The woman of the hour: Cheryl looked divine as always, surely nobody could upstage her?

Gold dust woman: Nicole really knocked it out of the park in this little number

Guess who's here? Nicole, Will and pals head into the club for Cheryl's party

And tonight she followed in the footsteps of the petite brunette by arriving at Cheryl's Whisky Mist afterparty with Chez's BFF, Will.I.am.

To make matters worse, Lewis Hamilton's gal was wearing a gold bandeau dress that all but left Cheryl's asymmetric boob tube number in the shade.

Scherzinger wore the same on-trend, figure-hugging gold dress, that she wore for tonight's show.

The US star clearly put a lot of thought into her outfit, pairing her Kristian Aadnevik muted gold dress with a pair of black Nicholas heels.

Out in front: Scherzinger's look was not to be beaten tonight

A bit tipsy? Nicole arrived with Will.I.am, who performed with Cheryl on the night

All that glitters: Cheryl wears a gold jumpsuit as part of her routine, she stunned the O2 with her show tonight

Genie in a bottle: Cheryl took to the stage in a gold jumpsuit as she performed at London's O2

Lewis Hamilton's other half wore her long hair sleek over one shoulder and added a splash of deep red lipstick to complete the look.

The night was tinged with controversy after Take That star Gary Barlow stormed out when his act Carolynne Poole was eliminated in favour of the controversial Rylan Clark.

Cheryl, meanwhile, delighted her Cheryl 'soldiers' with her performance in east London and was joined by her boyfriend Tre Holloway and Girls Aloud buddies Nicola Roberts and, after her performance on the BBC's Strictly Come Dancing, Kimberley Walsh.