To my dismay, the Topshop product she mentions is now only sold on the American version of the site - and I'm not so desperate that I'd pay a ridiculous amount of p+p just for a lipstick.
So I rummaged around on the ever-vast internet and found a dupe which I'm pretty damn impressed with! It may not be as rich and deeply toned as the Topshop version, but Bourjois' Rouge Edition Velvet Lipstick really does a great job.
It's perfectly matte, but not an icky, dry sort of matte - in fact, once you get over the initially odd sensation of velvety-feeling lips, you realise that it's actually quite a nice, soft texture.
The colour is well-pigmented; I bought the shades 'Personne ne rouge!' and 'Peach Club', a deep, berry red and a coral red, respectively. This product is available in six shades from Boots, ranging from hot pinks to fiery red tones.
In terms of staying power, I can wear it without reapplying for at least four hours (probably a bit less if I'm eating or drinking, although it doesn't rub off all that easily). I must add that this definitely isn't a lipstick that you can apply without a mirror; the applicator is good for getting into the corners of your lips, but it does build up product in the wrong places if you're not careful.