Season 1 of Secret Lives premiered on January 25, 1999.

Season 2 of Secret Lives premiered on August 30, 1999.

Season 3 of Secret Lives premiered on August 28, 2000.

Season 4 of Secret Lives premiered on August 20, 2001.

Season 5 of Secret Lives premiered on September 2, 2002.

Season 6 of Secret Lives premiered on September 1, 2003.

Season 7 of Secret Lives premiered on August 30, 2004.

Season 8 of Secret Lives premiered on August 30, 2005.

Season 9 of Secret Lives premiered on August 14, 2006.

Season 10 of Secret Lives premiered on August 20, 2007.

Season 11 of Secret Lives premiered on August 18, 2008.

Season 12 of Secret Lives premiered on August 24, 2009.

Season 13 of Secret Lives premiered on August 30, 2010.

Season 14 of Secret Lives premiered on August 29, 2011.

Season 15 of Secret Lives premiered on September 3, 2012.

Season 16 of Secret Lives premiered on September 9, 2013.

Season 17 of Secret Lives premiered on August 25, 2014.

Season 18 of Secret Lives premiered on August 31, 2015.

Season 19 of Secret Lives premiered on August 16, 2016.

Season 20 of Secret Lives premiered on August 21, 2017.

Season 21 of Secret Lives premiered on August 20, 2018.

Season 22 of Secret Lives premiered on August 16, 2019.

Season 23 of Secret Lives premiered on July 31, 2020.

Season 24 of Secret Lives premiered on August 6, 2021.

Season 25 of Secret Lives premiered on August 5, 2022.

Season 26 of Secret Lives premiered on August 4, 2023.

Season 27 of Secret Lives premiered on August 9, 2024.

Season 28 of Secret Lives premiered on August 8, 2025.