Billie Eilish gave a rare look at her sexy side. Eilish, 24, showed off her curves in a plunging top while she nibbled on a chocolate chip cookie in a new photo she shared via Instagram on Tuesday, January 6. She launched her 2026 Instagram aesthetic with the nonchalant snapshot rocking a black top featuring white polka dots all-over. The design was complete with daringly low-cut neckline triangle cups and razor-thin straps. The singer further dressed up her look with a silver pendant necklace and matching rings.