All you have to do is take a look at the pieces - selected by Reiss Head of Menswear, Alex Field - then pick your favourite, note down the hashtag, and head over to Twitter, where you'll find full competition details.
"Crafted from a wool blend for a luxurious feel, the Fairline two-button blazer boasts a contemporary cut, but you'll still find classic details. Style with navy trousers, a white shirt and tan brogues for effortless cool in the boardroom or at the bar." #FAIRLINE
"Crafted from pure white cotton, the Astley Oxford features a point button-down collar for a crisp finish. Wear yours with a navy heavy knit cardigan, slim-fit black jeans and brown chukka boots for an unfussy yet elegant look." #ASTLEY
"While this pure cotton piece has all the classic design features of a mac, we've made it relevant for the season by focusing on clean, crisp lines, resulting in a contemporary look. Endlessly versatile, the Curzon mac looks great over a sharp suit or layered over off-duty attire."#CURZON
"This season we were enamoured with the dogstooth print. We turned down the tones and scale of the print for a wearable finish, making it apt for many occasions. Wear it with a burgundy knit, sand chinos and polished black shoes on the weekend." #BRODERICK