She played Dinah Lance / Black Canary in the TV series Smallville, and 1st Lt. Tamara Johansen in Stargate Universe, where she was a regular cast member.

At the age of 13, she went to her first audition for a Fox Family Channel pilot, where she was offered the main role.

When her parents moved to Dallas, Texas, she saw the opportunity to live in the United States and enroll in college, leaving modeling behind.

Alaina has four children with ex-husband John Huffman: sons Elijah and Lincoln, and daughters Hanna and Charley-Jane.

While pregnant with Charley-Jane, she was acting in the first season of Stargate Universe, so the pregnancy was written into the plot.