The midlands club will wear white shirts next season, with blue shorts and socks, according to information leaked to the Express and Star.
The Adidas kit will still feature blue stripes, but these are set to be much thinner, leaving fans unhappy at the break from tradition.
A poll of over 5,000 fans however suggested that 75 per cent oppose the change, with John Homer, chairman of the West Bromwich Albion Supporters Club, calling 'an unnecessary break with tradition.'
West Brom have worn Blue and White stripes every year since 1892, with the exception of a period during the 1940s when they played in all blue.
The change was described as the biggest alteration to a Baggies kit since the early 1990s. The club wore an uneven 'bar-code' design shirt between 1992 and 1994.
The move to a pin-stripe echoes a similar change by Southampton two seasons ago. The Saints ditched their traditional red and white striped kit for a red kit with pinstripes, before removing the stripes altogether this season.
But it's not quite in the same league as Cardiff City, who's owner Vincent Tam parted with tradition and moved from Blue to Red last year - Red is considered a lucky colour in his native Malaysia - the irony not being lost on those fans who opposed the change - with Cardiff being relegated yesterday after just one season in the Premier League.