From Clifford Thies:

Army Reservist Track Palin and his beautiful wife (and childhood sweetheart) Britta Hanson are expecting their first child.

The London Daily Mail notes:

Sarah Palin is going to be a grandmother again - her 22-year-old son Track is expecting his first child.

The Republican politician’s new 21-year-old daughter-in-law Britta Hanson appears heavily pregnant in newly-posted photos on a friend's Facebook account.

Track spent a year with the Army in Iraq as a reservist before the wedding; Britta, the daughter of a minister, is a University of Alaska nursing student.

Britta grew up in rural Alaska not far from Wasilla. They dated all through high school, were winter sports buddies, and have known each other almost all their lives.