Odalys spends New Year's in yellow underwear is the main idea of the article "Nuestro Año Nuevo pt. 2" by Hermanas JM. The article likely discusses Odalys' quirky tradition of wearing yellow underwear on New Year's as a symbol of good luck and prosperity. This tradition is common in some Latin American cultures where the color yellow is associated with wealth and good fortune. Odalys' choice to spend New Year's in yellow underwear may be a personal belief or a fun cultural tradition that she enjoys. The article may also touch on other New Year's traditions or resolutions that Odalys and her family partake in. Overall, the article highlights Odalys' unique way of celebrating the New Year and sheds light on the diverse customs and beliefs surrounding this holiday in different cultures.