<P> Liv and Maddie, titled Liv and Maddie: Cali Style for the fourth season, is an American comedy television series created by John D. Beck and Ron Hart that premiered on Disney Channel on July 19, 2013, and ended on Disney Channel on March 24, 2017 . The series stars Dove Cameron, Joey Bragg, Tenzing Norgay Trainor, Kali Rocha, Benjamin King, and Lauren Lindsey Donzis . </P> <P> A significant feature of the series is that Dove Cameron plays dual roles, one being Liv, an actress who has returned to her home after starring on a popular television series in Hollywood for four years, and the other one being Maddie, Liv's identical twin who remained behind . Another significant feature of the series are documentary - style cutaways where characters speak to the viewers to explain their opinions on various situations in each episode . </P> <Table> <Tr> <Th_colspan="2"> Season </Th> <Th_colspan="2"> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 21 </Td> <Td_colspan="1"> July 19, 2013 (2013 - 07 - 19) </Td> <Td> July 27, 2014 (2014 - 07 - 27) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 24 </Td> <Td_colspan="1"> September 21, 2014 (2014 - 09 - 21) </Td> <Td> August 23, 2015 (2015 - 08 - 23) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 20 </Td> <Td_colspan="1"> September 13, 2015 (2015 - 09 - 13) </Td> <Td> June 19, 2016 (2016 - 06 - 19) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 15 </Td> <Td_colspan="1"> September 23, 2016 (2016 - 09 - 23) </Td> <Td> March 24, 2017 (2017 - 03 - 24) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Season </Th> <Th_colspan="2"> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr>

How many seasons of liv and maddie are there
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