This weekend however, they've gone head to head in a battle of book signing outfits. Duh-duh-duh!
Quite clearly the thing to be doing today, all four ladies slipped into something bold to show off their new literary works to fans. So what can we tell from their book signing style?
Rather a lot we'd like to think...
Amanda Holden in bright yellow: 'Yes, you can see my nipples through this dress, are you excited? Go on, get excited. I wrote a cheeky book too.'
Kimberley Walsh: 'Look at how fun yet chic this all is. I'm fun yet chic you know. Go on, I wrote about Cheryl too.'
Joan Collins: 'Darling, my book? Forget it, look at me instead!'
Kate Price: 'You've read all of this in The Sun already and it's my fifth autobiography despite being just 35. Whatever.'
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