Sierra has 4 siblings Shawn Mendes who is 19, Sarah Mendes who is 16, Kyrah Collins who is 5,and Hannah Gutowski who is 3.
Sierra Renée Mendes is 14 and has 2 step dads. Her birth father, Steve Mendes, unfortunately died when Sierra was 4. Her mother, Daniela Monroe, has remarried 3 times and is engaged and pregnant with twins, Max and Marilyn.
The Mendes' and the Brooks' were very close when Steve was around and when Daniela's 1st husband, Ken Collins.
