I tried on a pair of the newly launched Martha's but wasn't totally impressed with the fit. Found the denim a bit "slack" and they just didn't sit right.
I have now bought Miss Selfridge Super Skinny Jeans as an alternative. They are fab as they are really NOT super-skinny because I cannot begin to get my athletic legs into a pair of truly skinny jeans! IMO they are the same fit as Marthas - perhaps closer fit at the ankle. They also have a decent mid-rise on them so no muffin top or arse cleavage issues.
That is good to know about the MissS jeans, I would never try on superskinny the name would put me off, I am petite though so wouldn't get the same range of colours, the review of these get a similar, i.e not considered skinny review.
They do look very skinny on the website but really they aren't. Definitely same fit as the old Marthas but a better fit around the waist, imo. I have worn them all day without any need to rearrange the waist etc.
Tapsel the name would have put me off too only I saw them in store first and realised they weren't as scary as I would have thought!