I have always been able to shop at Ellos.dk - and always found many items that I liked! Ellos has been around for years and can be compared to the OneStopPlus-websites as Ellos also offer clothes from many different brands. However, Ellos carry clothes from Danish sizes 34-64 (UK 6-36, US 4-34) !
The thing I like about Ellos is that they offer so many different styles, fabrics and brands - in all price ranges. Their basics collection is quite large and many single items are offered in a wide size range - for example, you can buy a particular dress in Danish size 34-54 (UK 6-26, US 4-24).
Also, Ellos provide customers with a special plus-size section that offer clothes in Danish sizes 42-64 (UK 14-36, US12-34). Focus is particular on the brands Denim 24/7, Tallissime, Danish brand Zizzi and Plus Collection.