There is an amendment to the ballet section of the rules for DWC 2020,

Classes – KDB , JDB and SNB,  Children, Junior and Senior duet/trio ballet any style - (non repertoire) , DWC will accept duets formed by girl/girl or boy/boy from the classical repertoire as well as boy/girl.

In the class KDPDD - Children  duet/trio pas de deux/trois  class – DWC will extend the age permitted  in this category.  Dancers can participate  in a pas de deux  from the age of 10 – 13 years but only dancers aged 12 and 13 are allowed to dance on pointe.

The updated rules can be found here :