More on that below, as we take a look at the stats behind their music careers to date.
In case you missed it, upon entering the CBB house, Sarah reeled off Girls Aloud's chart stats like a pro.
Let us know your thoughts in the comments box below.
Channel 5 producers said last night that they were “monitoring” the fragile Girls Aloud star after she fell apart in the Diary Room.
She may have been Girls Aloud’s favourite blonde bombshell, but Sarah Harding has ditched her signature platinum locks for a new darker ‘do.
Debuting her latest look on the front row of Vivienne Westwood’s London Fashion Week show, the songstress wore her hair high in a twisted updo, with a soft fringe of side-swept ringlets.
So there’s the evidence, now we want your verdict on Sarah’s style: Do you love her darker ‘do, or should she stick to the lighter side?Doctors and psychologists are on constant call to help after she regretted her binge.The singer, who has also battled an addiction to painkillers, confessed to suffering from crippling headaches for three days solid as the stress of the show took its toll.Real Wives Of Beverly Hills star Brandi Glanville said: “I really like Sarah a lot. She’s very fragile right now.”Gogglebox favourite Sandi Bogle later comforted the distraught pop babe, telling her: “Stay positive, be you and do you.” The singer, who has had several bouts in rehab, told Big Brother: “I have tried to stay positive and they ask me what’s wrong and I tell them.“I’ve had a headache for three days.I’m not used to being in an environment like this.“I just don’t feel like I belong here any more.”The 35-year-old was previously engaged to DJ Tom Crane, who she dated for five years.Girls Aloud's total single sales top out at 4.4 million, while their album sales stand at a healthy 4.1 million.Their biggest single is their debut Sound Of The Underground (715k sales) and 2008's Out Of Control is their biggest studio album, with a whopping 800,000 copies sold.While ones music career has been significantly longer than the other, both can claim to have turned out some belters in their time.Coincidentally, Sarah and Amelia are both from the Xenomania production stable - the team helmed pretty much every Girls Aloud song as well as Amelia Lily's (eventually shelved) debut album.Or when La Toya Jackson, Mutya Buena, Coolio and A1's Ben Adams were cooped up together in 2009?This year's house counts two pop stars among its residents: Sarah Harding from Girls Aloud and X Factor's Amelia Lily.