By Amy Lawrenson

Okay, so it's Blue Monday today but with the sun shining over ELLE HQ we're not feeling too bad! Whether you're suffering the effects of what is meant to be the most depressing day of the year, or not, we wanted to share a little beauty offer that is bound to cheer up your day.

Benefit has teamed up with Diet Coke, which means that every time you buy one of the specially designed 'Get Glam' cans, you'll receive a £5 voucher code, redeemable against purchases at benefitcosmetics.co.uk. The hard part will be deciding what to buy - Posie or Benetint, BADgal Lash or Magic Ink - now that's the kind of conundrum we love.

Check back this afternoon for our second offer alert...