Yummy Mummy is described by Butter London as a medium beige that is stunning on every skin colour. Well, I can't vouch for every skin colour, but it certainly suits mine! The subtle silver sheen sets it apart from your average neutral creme, and softens it nicely. I would describe this as a weak tea colour.
I used 2 coats here, and although there is a hint of visible nail line in the photos, they're not visible in person.
In Australia, Butter London is available from selected pharmacies nation-wide (check the Lacquerheads of Oz Polish Stores Map for one in your area - and if you know of one that isn't on the map, add it!). They also pop up quite often on Brands Exclusive and Ozsale.
If you're in the UK or US, you can get this from the Butter London website.