This is a an extremely easy, 5-minute, fashion DIY!! All you need is an old sweater and some spare studs. The only thing you have to remember is to be careful not to brake the knit with the stud, place it carefully from one of the "holes" to avoid ripping of the fabric.
Be creative! Use different coloured studs, make patterns etc... I am very minimalstic so this is how my sweater ended up looking.
What do you think? :)