Born in Vancouver, British Columbia, Lowndes began her acting career at a young age, appearing in various television shows and films before landing her breakout role as drug-addicted teen Adrianna Tate-Duncan on The CW TV series 90210.

Beyond acting, Lowndes has expanded her career into production, having executive produced eight projects, two of which she has written the scripts and music for, as well as starred in.

Lowndes both wrote and starred in Harmony from the Heart for GAF and Hulu, alongside Jesse Metcalfe.

Lowndes made her acting debut on the 2005 television film Saving Milly as Andrea Kondracke at the age of 16.

In 2008, Lowndes appeared in Autopsy and The Haunting of Molly Hartley along with another recurring role, this time as Mandi, in the television drama series Greek.

Lowndes starred in Lionsgate's 2014 action film The Prince alongside Bruce Willis and John Cusack.

In 2015, Lowndes starred in Lifetime's dramatic-thriller comedy film A Deadly Adoption alongside Will Ferrell and Kristen Wiig.

"[13] Lowndes later collaborated with music producers James Rendon and Kayden Boche to record a featuring version of French American Idol finalist Jérémy Amelin's single "Undone"[14] — which premiered online on May 6, 2011[15] and was released worldwide on May 23, 2011.

[17] Shortly after, Lowndes released her follow-up single "I Wish I Was Gay",[18] alongside its official music video directed by Frank E. Flowers, on November 11, 2011.

[19] On January 25, 2012, Lowndes released her debut EP—featuring singles I Wish I Was Gay and Nothing Like This, along with two new songs Stamp of Love and Go Back.

[20] The Devil's Carnival soundtrack also features a song titled In All My Dreams I Drown performed by Lowndes and released on April 3, 2012.

[citation needed] (with Wes Brown)[33] (featured on Hallmark Channel movie Over the Moon in Love)