Another way to style this awesome sweater, this look is more suited to cooler weather, i.e. the no legs on show, darker tones etc.  I was a bit anxious about adding the black but to be honest I would throw it on anyway.
As for the trousers, they were like £3 from eBay, but their smallest size is a 10. so it may make your bum look goood, like good, however if you'rea small as me or smaller it will slide off your waist a tad bit. But if you're not bothered by the loose fit I recommend them