An understanding father has "adopted" his trans daughter's best friend after her own dad supposedly rejected her over her transition.

Australian actor Mat Stevenson is now a father to two trans girls after he recently signed a certificate symbolically recognizing that his daughter's friend Belle Bambi - also trans - is a part of their family.

Earlier this month, TikToker Grace Hyland, Stevenson's first daughter, shared the news in a video captioned: "We're sisters now!"

Check out the heartwarming video below:

[[tiktokwidget||https://www.tiktok.com/@grace.hylandd/video/6993427151676640514]]

"My BFF's dad left because she's trans," Hyland explained in the video. "So we did this: Dad is adopting her! He's always supported me, and he wants to support Bambi, too. We're sisters now!"

In the video, which has so far been viewed a whopping 2.7 million times, the two friends act out a scene that starts off with Hyland passing Bambi a congratulatory bouquet of flowers before Stevenson presents his new daughter with an adoption certificate.

Per the Daily Mail, it is not a legally binding adoption, but symbolizes that Stevenson is Bambi's "chosen dad".

Needless to say, a number of people were touched by the sweet gesture, with one person writing: "I could never imagine abandoning my child over something that makes them happy. Kudos to this dad!"

Another added: "She looks so happy!! Her dad didn't deserve her and your dad is amazing"

While a third said: "Honestly your dad is amazing honestly and she's got an amazing friend and a sister in you."

A fourth commented: "So proud of your dad and you are all very beautiful inside and out especially when you both adopted her!"

[[imagecaption|| Credit: TikTok / Grace Hyland (@grace.hylandd)]]

Bambi herself took to TikTok to share the news with her own followers, captioning the post: "Finally a dad who accepts and loves me for who I am".

Check the video out here:

[[tiktokwidget|https://www.tiktok.com/@bambifairy/video/6993289089436962049]]

"Some days I think about how my dad left me because I'm trans," Bambi explains in the clip before a series of photos appear of the TikToker with her birth dad pre-transition.

Next, the new family acts out another scene in which Stevenson knocks on his daughter-to-be's bedroom door and surprises her with an adoption certificate.

Featured image credit: Pexels

Dad 'adopts' trans daughter's best friend after rejection by her own dad after transitioning