While the 2010s were about the top of the shoulder, the 2020s are seeing "underarm vents" in blazers and techwear, blending breathability with a futuristic aesthetic.
The traditional cut-out was always about the waist or the ribs. The new cut-out is the lateral thoracic cut-out . Designers are slicing fabric away from the side seams, creating a window that frames the underarm without removing the sleeve entirely. This offers a "peek-a-boo" effect that is more elegant than lewd.
They released a perfume called Costarela specifically designed to be sprayed on the chest and underarms to smell like "seaside skin." Style influencers layer it over unscented deodorant for a "signature pit scent."
