The Bovein Sisters include Camilla Wight-Bovein, Julia Bovein, Joanie Bovein, and the eleven other unseen, unnamed, adoptive daughters of Mike Bovein in the PsychoAndyverse webcomic, Hawk & Croc. All thirteen Bovein sisters (including Camilla, Joanie, and Julia) were born within a calendar year of each other. They are, in order of age:
Camilla, Janet, Bru, Marsha, Avril, Mayflower, Joanie, Julia, Augusta, Amber, Tobi, Nova, and Dodecahedron.
The only Bovein sister to have kept her non-adoptive name is Camilla Wight-Bovein, who was adopted at a later age than the other sisters. The other 12 are all named after their birth months in some fashion.
It is still unknown why Mike Bovein thought it was a good idea to adopt 13 girls who were so close in age to each other. Perhaps he and his wife could not procreate? It is unknown if he is married.