A duvet cover in king size can be found in most furniture shops. A good low cost start would be to check out chains like Target or IKEA for a reasonably priced cover
The size of a Standard King size duvet cover in North American is 102" x 86" or 259 x 218 cm. This is also the same size duvet cover for a California King.
A king sized comforter will not fit in a Queen sized duvet cover.
If you like butterflies, you can find a butterfly duvet cover at Pottery Barn. It comes in twin, queen and king sizes and ranges in price from $76 to $129.
There are a number of retailers one can purchase a king size duvet cover from both online and in store. One can purchase them from 'Amazon', 'Macy's', 'Walmart' and 'John Lewis'.
Duvet covers come in king, queen/full, twin. They will fit comfortors which are the same size.
It really depends on the size of your bed. If you have a full or queen size bed a king size or Cal King duvet cover might be able to cover the box spring. I recommend getting a bed skirt which will fully cover the the box spring.
That is okay to do as it will cover the whole bed.
No it is too small Yes ! Using one size smaller covers just makes it fluffier and thicker, it's just "down " and will fit any size you can squish it into. And of course ot will be same size of the cover it is in. I always use a queen cover for my king down duvet.
it's your choice i cant remember that much
You can purchase a super king size duvet cover in many online shops. These include Amazon, Ebay and Yorkshire linen. You can also buy them in department stores such as House of Fraser and Debenhams or specific fabric shops like Dunelm Mill.
You can buy twin duvets fro several retailers, Argos and Tesco have the best value range of duvet covers. Marks and Spencer and Debenhams have the best quality range of duvet covers and bedding.
Yes you can get the Wrinkle Free King Duvet Cover Set from bed Bath and Beyond.