The University of Washington introduces a groundbreaking innovation: Thermal Earrings. These wireless wearables monitor earlobe temperature discreetly, offering a stylish health-tracking solution. Smaller than a paperclip, with a 28-day battery life, they feature customizable designs and accurate temperature sensing. The device surpasses smartwatches in ovulation tracking and stress detection. Researchers envision broader health monitoring applications and plan to integrate heart rate and activity tracking. Led by doctoral student Qiuyue Xue and co-authors Yujia Liu and Mastafa Springston, the project receives funding from the Washington Research Foundation. Published in Proceedings of the ACM, this development signals a new frontier in wearable health technology, merging fashion and function for personalized well-being.