Girls Aloud's Cheryl's bonus day came in the form of a brief 30 minute performance for the ongoing 63rd Cannes Film Festival, when luxury jeweller de Grisogono invited her to appear at a dinner party hosted at the swanky celeb-filled Hotel Eden Roc last night. Guests included first lady of fashion, Naomi Campbell, as well as designer Margerita Missoni.

As one of the brand's many celebrity fans, Cheryl is often loaned earrings from their exclusively pricey collection for her X-Factor appearances, and it was rumoured that in addition to her whopping (I can't even bring myself to write it down twice) fee, she also received a piece of sparkly for her efforts. Not a bad goodie bag at all!

The 26 year old brunette bombshell made her fortune from 'Girls Aloud' which has had a consecutive string of girly band chart toppers - but over the last year, she catapulted further up the world of 'wealthy' rankings by making it into the number 4 slot of the Rich List for musicians aged under 30, compiled by The Sunday Times. Her accumulated wealth has reportedly soared 150 per cent to a mind boggling £11 million within the space of one year!!

We don't suppose her bank account would've complained either by the £1.2 million she raked in as a judge on The X-Factor and the deals she has signed with Coca-Cola Zero and L'Oréal. As a solo star, she initially sang additional vocals on ‘Heartbreaker'  by will.i.am of the Black Eyed Peas, and her 2009 chart topper ‘Fight For This Love', not only swept right up to numéro un, but went on to become the fastest selling single of the year.

The most probably soon to be ex-WAG (which by the way, is an acronym used particularly by British tabloids to describe the wives and girlfriends of high-profile football players), definitely won't be singing for her supper anytime soon, but who in their right mind would turn down £250,000 (hurts to write that down) for 30-minutes of their time?

After a rather tumultuous three-and-a-half-year marriage to Chelsea defender aka the 'serial betrayal' husband Ashley Cole, the couple now face the unsavoury business of dividing up their combined assets, which happens to be (are you ready for this?) an estimated..choke...£22 million fortune!! Despite attempting to keep it out of the public eye, Cheryl insists that she only wants the dogs and her home.

So if a year was enough to enhance her wealth by 150%, and with a high-profile, messy divorce impending, what will the next year hold for Cheryl Cole? Well, at £250,000 for 30 minutes - do the math, we think she'll do just fine.

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