Kirstin Taylor Maldonado was born in Fort Worth, Texas, on May 16, 1992. Her mother is Spanish-Italian, while her father, Michael Cisneros, is Mexican. Maldonado was raised by her mother Angelica Maldonado in Arlington, Texas. Maldonado was only five years old when she first expressed her wish to become a singer. At eight years old, she sang at her mother’s wedding reception, ultimately convincing her mother to enroll her in voice lessons. Maldonado also got into theater and starred in several local productions. It was through the local theater community that Maldonado met Mitch Grassi, a future fellow Pentatonix member.

Maldonado attended Holy Rosary Catholic School, and later Martin High School. At Martin High School, she met Scott Hoying with whom she and Grassi would later form Pentatonix. The three friends created an a cappella trio and started getting attention around their school for their covers of popular songs. Maldonado graduated from Martin High School in 2010 and went to The University of Oklahoma where she was a Musical Theatre Performance major. She dropped out in order to form Pentatonix.

In 2011, Maldonado was contacted by her high school friend Scott Hoying who wanted to put together a group for NBC’s a cappella competition The Sing-Off. Maldonado agreed to join the group, which also included Mitch Grassi, another of her high school friends. Together they formed the a cappella group Pentatonix along with Avi Kaplan and Kevin Olusola. The group entered and eventually won the third season of The Sing-Off. Since then, they have released several albums and EPs, reached 13 million YouTube subscribers and over 2 billion YouTube views, and toured the world. As a member of Pentatonix, Maldonado has won three Grammy Awards. On February 8, 2015, Pentatonix won a Grammy in the “Best Arrangement, Instrumental or a cappella” category for their song “Daft Punk”, a medley of songs by Daft Punk. On February 15, 2016, Pentatonix won a Grammy in the same category, this time for “Dance of the Sugar Plum Fairy” from their “That’s Christmas to Me” album. On February 12, 2017, Pentatonix won a Grammy in the “Best Country duo/group performance” category for “Jolene” which featured Dolly Parton.

Maldonado performed at the Hippodrome, London with the song “Never Neverland” together with Scott Alan in May 2014.

In January 2016, Maldonado performed the song “Somewhere Over the Rainbow” at the World Dog Awards in honor of the dogs who have played the role of Toto from the iconic story about The Wizard of Oz.

In February 2016, the a cappella group Voctave released the video “Disney Love Medley” which featured Maldonado and her fiance Jeremy Michael Lewis. In the video, Maldonado and Lewis perform the songs “I See the Light” from Tangled, “You’ll Be in My Heart” from Tarzan and “Go the Distance” from Hercules with the members of Voctave providing the backing vocals. In May 2016, Maldonado, along with Grassi and Hoying, appeared in an episode of Bones titled “The Strike in the Chord”. Maldonado played the role of Liz Dervan, a member of the college a capella group “The Gingersnaps”.

On May 29, 2016, she became engaged to Jeremy Michael Lewis. In 2017, the couple postponed their wedding to work on certain unstated “issues”.

In February 2017, Maldonado stated during an interview she would be releasing a solo project sometime in the spring. On May 19, 2017, Maldonado officially released her first solo single, titled “Break a Little”, alongside a music video. Her debut EP L O V E was released on July 14, 2017. She released a collaboration with Play-N-Skillz titled “Hey Guapo” on August 31, 2017.

In 2018, Maldonado starred as Lauren in the Broadway musical Kinky Boots alongside singer Jake Shears and comedian Wayne Brady: The musical’s final performance took place on May 4, 2018.