Shay Mitchell calls her grandmother her best friend in sweet message

When Shay Mitchell walked the red carpet at the Los Angeles premiere of Mother's Day on Wednesday (Apr. 13), she did so with her number one fan and best friend by her side. "Nothing felt better than getting to take my best friend in the world to my first movie premiere last night ... the one who knows all my secrets and loves me unconditionally," wrote the Canadian actress on Instagram alongside an adorable photo of herself posing with her stylish grandmother.

The actress looked stunning in a silver Temperley London gown as she escorted her grandmother into the TCL Chinese Theatre. The film, which features a star-studded cast including Jennifer Aniston and Julia Roberts, is the Pretty Little Liars star's first feature film.

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The actress dazzled in Alice Temperley at the premiere of Mothers' Day.

Shay was quick to thank her grandmother for supporting her through thick and thin, writing, "She stood next to me in Toronto and Vancouver when all of this was just a dream and to be able to have her stand next to me last night was something I will never, ever forget." The 29-year old once told Hello! Canada that her grandmother documents her career in scrapbooks. "She calls me like every week and she’s like, ‘I just keeping filling them up.’ She cuts out everything."

In addition to sharing the special night with her family, the Toronto native was sure to let her fans in on the experience via Snapchat. The star is a bona fide social media maven, having accumulated over 3.25 million followers on Twitter and another 11.5 on Instagram.

Photo: Nino Muñoz/FLARE

In addition to making her big screen debut this month, the actress also graces her first cover of FLARE. In the fashion magazine's May issue, Shay opens up about her early days bartending in Toronto -- "I might have been the worst bartender in history -- to the importance of portraying a positive role model for LGBT youth. “A lot of the time in TV and movies, lesbian relationships are overly sexualized. But Emily’s were always very sincere. Our show was a trailblazer in that way.”

For more of Shay's interview visit flare.com.

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