Jessica Simpson is the latest celebrity to join the Birkin club. After celebrating her 31st birthday over the weekend, the singer was surprised by hubby-to-be Eric Johnson with a Hermès Birkin in bright orange. Jessica tweeted a picture of her new bag, saying "Eric made my birthday!!! I have never been more surprised in my life! Jackie O who?" It costs a pretty penny to own an item from the iconic label, with the bag having an estimated price tag of $US15,000. Jessica follows in the footsteps of Olivia Palermo, Rachel Zoe and Victoria Beckham, who all own one of the luxe handbags. If you had to endure the two-year (and then some!) long waitlist, which colour Birkin would you choose? Let us know in the comments section below!