Gallagher, 38, launched the collection in July last year and it consists of items such as bomber jackets and polo shirts.
The name of the label is after a song by British band The Jam, which Weller used to be the frontman in, and he is now designing some items for the label.
He said: 'I've wanted to design my own range for some time, and Pretty Green felt like a good home for my clothes.
'I guess my main design reference is somewhere between 1968 and 1970. The clothes themselves sit between being smart and casual, with quality materials and tailoring.'