Gwen Stefani's Mammoth Vacation Continues Into the New Year

Gwen Stefani keeps warm in an all-white puffy ensemble during a day of skiing with a friend on Thursday afternoon (January 1) in Mammoth, Calif.

The day before, the 45-year-old “Baby Don’t Lie” singer made her way back to the Mammoth Mountain Resort solo.

PHOTOS: Check out the latest pics of Gwen Stefani

Gwen is on vacation with her husband Gavin Rossdale along with two of their sons, Kingston, 8 and Zuma, 6 (not pictured).

10+ pictures inside of Gwen Stefani hitting the slopes with a friend in Mammoth…