Taylor Lautner Celebrates His Sister's Engagement With the Sweetest Post

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Congratulations, Makena!

Taylor Lautner is a proud big brother!

The Twilight star took to Instagram on Saturday to celebrate the engagement of his 20-year-old sister, Makena.

"Last night was one of the biggest moments of my life. My best friend, also known as my baby sister, got engaged to the love of her life. I could not be more proud of the woman that you have grown to become and I don’t know where in this world I would be without you," the 27-year-old actor captioned the series of moments from the couple's engagement night. "The love that you two have is truly one of a kind and I cannot wait to watch the rest of your guys love story play out. Congratulations Jake and Makena! I love you both more than you know."

Lautner is incredibly close with his only sibling and has always been there to cheer her on. Last August, when Makena had to go through a heart procedure, Lautner supported her on Instagram, writing, "2nd heart procedure is finally a MASSIVE success. Couldn’t possibly look up to this little/not so little girl any more. You are much braver than I @makenalautner.. Love you so."

Earlier that summer, Makena shared a pic of her sibling, calling him the "best big brother EVER."

Congratulations, Makena!

Meanwhile, earlier this year, Lautner reunited with his Twilight co-star, Kristen Stewart! See the story below for more.