Zelda Williams is paying tribute to her late father, Robin Williams, in a lasting way.

The 25-year-old debuted a tattoo honoring the comedian, who committed suicide in August. The ink, located on her right hand, is of a hummingbird in flight. Below that, on her inner wrist, is the Good Will Hunting star's birthdate: 7.21.51.

"For poppo," she wrote along with an Instagram photo. "Thank you to the incomparable @dr_woo_ssc for so beautifully bringing my reminders to life. I'll always put my hand out to shake with a smile."

Dr. Woo, a tattoo artist at Mark Mahoney's Shamrock Social Club in Hollywood, also posted a photo of the tat, writing, "A special hummingbird for @zeldawilliams."

At Robin's memorial service held in his hometown of San Francisco in September, attendees, who included Billy Crystal, Whoopi Goldberg, and his Mork & Mindy co-star Pam Dawber — were given wristbands with a hummingbird image and the phrase: "Love the stillness of life." According to the Spirit Animals & Animal Totems website, hummingbirds symbolize "joy and playfulness" and are known for "lifting up negativity" — all very Robin things.

On Thursday evening, Zelda took to Twitter to respond to fan questions about why she opted for a hummingbird design instead of a robin.

Zelda is the elder of Robin's children by his second wife. Named after the video game Legends of Zelda, she appeared in ads for Nintendo with her gamer father. Following his sudden death, she suspended her social media accounts (she's on Twitter, Tumblr, and Instagram) after receiving mean messages pertaining to his suicide. She returned a month later and posted a personal message earlier this month on World Mental Health Day, urging those struggling with depression and mental health issues to seek help.

It's nice to see her keeping her poppo's memory alive, whether it's on social media — or her hand.

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