Christina Aguilera wore only a white head towel for her late-night bath soak on Tuesday. The 40-year-old superstar singer was big-time pushing self-care as her thing for 2021 on Instagram, with Xtina's 7.4 million followers getting their favorite bombshell in the nude and showing off everything from her bold red lip and side-eye to her preferences for taking her bathtime public. "The Voice" judge extended love across IG with "self love all 2021," and she even got a major celebrity replying. Check it out below.