Fourth Era (2016 —)

The League is organized into two divisions: Male and Female — each featuring 128 Contestants.
An elimination style is adopted with each round consisting of 4-person groups, in which Top 2 qualify.
Aquamarine, Topaz, Amethyst and Sapphire periods accomodated the Round of 128.
Emerald and Ruby periods form the Round of 64 while the Round of 32 is also the Diamond Period.
Contestants are randomly placed into a period in the Round of 128 and Round of 64.

Third Era (2015)

The League is organized into three divisions: Nova, Stella, and Male — each featuring 36 Contestants.
The Regular Season consists of five Periods - Aquamarine, Amethyst, Ruby, Emerald, and Topaz.
Sapphire and Diamond are used for the Division Finals. League Finals are single-elimination.
A Tournament of Champions is held, featuring all previous Tiara winners including the present year.

Second Era (2012-2014)

The League is organized into two divisions, Nova and Stella, each featuring 36 Contestants.
The Regular Season consists of five Periods - Aquamarine, Amethyst, Ruby, Emerald, and Topaz.
Sapphire and Diamond are used for the Division Finals. League Finals are single-elimination.

First Era (2008-2011)

All Contestants are in a single pool, starting with 64, then reducing to 50 in 2010.
The Regular Season consists of seven Periods: Aquamarine, Topaz, Amethyst, Sapphire, Emerald, Ruby, and Diamond.
The Postseason is a double-elimination format through 2010 with single-elimination in 2011.