<human>:  What trends in fashion do you think will emerge in 2021?
<bot>: I think the most popular fashion trends in 2021 will be color blocking, vibrant colors, sustainable fashion styles, layering, earthy tones, and statement pieces. Last year saw an explosion of athleisure - and that trend looks set to continue, as well as gender-neutral streetwear styles. Hair accessories will remain a popular option, as will footwear such as chunky sandals, oversized tennis shoes, and slippers.