Oh lordy, after wearing it this week at the P&G Future Fabrics conference in Milan, I'm obsessed with the new Yves Saint Laurent La Laque Couture shade!
A deep berry hue, you'll need two coats to get good coverage - it can be a bit streaky - but the finished shade leaves you with nails the colour of something utterly awesome, falling between rich black berry and shiny aubergine.
It's out now at YSL beauty counters, £18. What do you think?