In fashion design, primarily in ready-to-wear lines, boyfriend is any style of women's clothing that was modified from a corresponding men's garment. Examples include boyfriend jackets, boyfriend jeans, and boyfriend blazers, which are often more unisex or looser in appearance and fit than most women's jackets or trousers, though still designed for the female form.
The origin of boyfriend fashion is literally borrowing and wearing your boyfriend's clothes - his distressed jeans, his band tees, his dress shirts, his blazers, his cardigan. The trend expanded in 2009 when actress Katie Holmes was spotted in public wearing Tom Cruise's slouchy jeans after a Broadway rehearsal; other celebrities such as Reese Witherspoon, Rachel Bilson, Sarah Jessica Parker and others began to follow the trend. From there, many brands such as Gap, Forever 21 and H&M began to create boyfriend fashion products or men's-inspired fashion.
The boyfriend blazer has been featured in many of the Spring 2010 walks such as Charlotte Ronson, Cynthia Rowley, and Elie Tahari. There are two main important ways to wear the look: making it oversized, and rolling up the sleeves. The boyfriend trend is all about wearing clothes that look a size too big for you. It is recommended to only go up one size. By rolling up the sleeves, it makes the look more feminine and balances it out while implying that the sleeves would be too long for your arms. The boyfriend blazer ranges in many different shades ranging from classic hues of black and gray to whites, pinks, and neons. They are very versatile because they can be worn with a cocktail dress, a skirt and blouse, or even leggings.