Chelsea will be 32 years old on December 17th. Perhaps you can send her a letter for her birthday :-)
— Chelsea Manning (@SaveManning) December 9, 2019
Here's her mailing address:
Chelsea Elizabeth Manning
A0181426
William G. Truesdale Adult Detention Center
2001 Mill Road
Alexandria, VA 22314 pic.twitter.com/DCrpPntIhd