One of the most complicated characters to follow is Natalia Fatale. The very first issue (2004) of this character was the subject of blog post Day 53 - Cosmetic Takeover. Cosmetic Takeover
Version 1.0 was released three times in 2005 and three times in 2006 (on the taller body). Also in 2006, Natalia was released with a closed mouth (Queen of the Hive) which became known as version 1.5. Natalia went through a personality crisis and was on sabbatical in 2007. The story cards rumors were that she was having "cosmetic work done". Version 2.0 was released in 2008.
Sometimes Integrity Toys isn't willing to give up on a mold. Natalia version 1.5 is an example of this. Although most mainline Natalia dolls have been released as version 2.0 since 2008, version 1.5 pops up on rare occasion; in 2011 it made two appearances: at the Integrity Convention as an ITBE called "Night", and this doll, IFDC Go West Natalia Fatale. (One of my favorite TV shows is Once Upon A Time; Go West Natalia reminds me so much of Regina!)