Austin Butler has revealed that his mother, Lori Butler, died yesterday (11 September).

The 23-year-old actor took to Twitter to express his love and to “celebrate” his mum’s life.

"Lori Butler, my mom, my hero, & my best friend passed away this morning. Lets all celebrate her. I love you and will miss you every day Mom," Butler's heart-felt tweet read.

Austin's GF Vanessa Hudgenstweeted: “I miss you already mama,” and later added “#ripLoriButler #celebrateLori spread the love for Lori.”

Vanessa’s mum, Gina Hudgens, also took to Twitter to offer her condolences, writing: "Lori, RIP. You'll be forever alive in our hearts & mind. You'll always be our angel in heaven watching over us. U will be missed!"

The cause of death has not yet been revealed.

[related]Austin was recently spotted on set in Los Angeles, filming for the upcoming movie Yoga Hosers. The film, which co-stars Johnny Depp, follows on from Tusk – the second in the True North trilogy of films featuring Canadian myth and culture.

The young TV star also recently landed a big role in US hit-show Arrow.

Our deepest sympathies are with Austin at this difficult time.