cottagecore noun [U]
UK /ˈkɒt.ɪdʒ.kɔːr/ US /ˈkɑː.t̬ɪdʒ.kɔːr/
a lifestyle based on traditional rural activities, or a way of dressing that suggests that lifestyle, usually adopted by people who live in cities

Cottagecore activities such as baking, gardening and making your own clothes have all boomed during the pandemic. Now menswear is taking note. Monthly searches for the staples of so-called “grandad style” have increased.
[The Guardian, 4 July 2020]

anti-fit adjective
UK /ˈæn.ti.fɪt/ US /ˈæn.t̬i.fɪt/
Anti-fit clothes are deliberately designed to fit the wearer’s body very loosely

Anti-fit clothing isn’t partywear. So, keep the vibe cool and comfortable even when it comes to shoes or accessories,” says Bollywood costume designer Rick Roy, who has worked with actors like Vidya Balan and Sonam Kapoor.
[hindustantimes.com, 15 February 2020]

Zoomwear noun [U]
UK /ˈzuːm.weəʳ/ US /ˈzuːm.wer/
a style of dressing that involves wearing clothes suitable for the office above the waist and casual clothing below the waist

Zoom Shirts are really the first and last word in Zoomwear. Zoom Jackets, I quickly discovered from looking around large Zoom calls in the early pandemic weeks, are vestimenta non grata. Zoom Ties look even more ridiculous. Everyone knows you have your laptop set up on the dining room table, with dishes just out of sight.
[New York Times, 29 June 2020]

About new words