First she was a blonde, then a redhead, then a blonde again and now ... a brunette!
January Jones debuted her darker 'do while out and about with her 1-year-old son Xander in Pasadena, Calif., today (Nov. 19).
Now, it appears that the "Mad Men" star has dyed her hair brown -- and we love it.
The 34-year-old actress can obviously pull off any hair color, but what's her best shade?
See photos of January's ever-changing hair below: