The British Champions Fillies & Mares Stakes is a Group 1 flat horse race in Great Britain open to fillies and mares aged three years or older.
It is run over a distance of 1 mile 3 furlongs and 211 yards (2,406 metres) as part of British Champions Day at Ascot in October.
The current system of race grading was introduced in 1971, and the Princess Royal Stakes subsequently held Group 3 status.
The race was run at Newmarket in 2000, after being called off at Ascot due to a security alert.
The event was promoted to Group 2 level, transferred to Newmarket and renamed the Pride Stakes in 2008.