She's released three solo albums and three as Selena Gomez & The Scene. Also a greatest hits compilation (For You) and a Spanish-language EP (Revelacion).
Kiss & Tell (2009)
A Year Without Rain (2010)
When the Sun Goes Down (2011)
Stars Dance (2013)
The DISRESPECT to Stars Dance sis it's SG4!! Or SG7 if you count the albums with The Scene (Revelacion doesn't count, it's an EP).
Anyway I thought Rare was a decent album and Revelacion was good as well.