That's Not My Age has never owned a bag with a name, like Kelly or Birkin or Alexa or Stam. My accessories would have names like Freebie and Giveaway and This Is Not A Designer Bag. Anyhow, I'm still hankering after a Mum Bag. And if I had a fat wallet, this week, I'd go for the Hermés Constance. I'd buy it from the Instant Luxe website, which has just launched in the UK (and was originally set up in France in 2009) - the retail price of a new Constance is approximately £4800 and this little number recently sold online for £1265. At Instant Luxe, customers can buy and sell second-hand luxury goods safe in the knowledge that they're getting the genuine article. Items are authenticated by independent valuers so there's no chance of being lumbered with a counterfeit dud. Bonne ideé, non?