October 28, 2015 02:45 PM

Caitlyn Jenner celebrated her birthday on Wednesday, and her family members have some sweet messages for the reality star.

The birthday is a particularly special one as Caitlyn is officially turning 66 but marking her first year living publicly as a woman.

Kim Kardashian West, Khloé Kardashian and Kendall and Kylie Jenner all took to their websites in honor of the former Olympian’s birthday.

“Happy birthday Dad! I love you so much and am so proud of you!” Kylie wrote. “I hope this next year is filled with love and happiness! Love, your baby forever.”

Kylie, 18, also uploaded a short video from her live stream, which she taped during the family’s early birthday brunch for Caitlyn’s birthday on Tuesday.

“Tell us how you feel to turn 66,” Kylie says to Caitlyn in the video, before Caitlyn says: “But I’m just 1 year old! I’m only 6 months old.”

“It’s my first real birthday,” Caitlyn continues. “I feel absolutely wonderful. I have the love and support of my family. I feel authentic, I feel myself, I’m just loving life. These last six months have been the best years of my life and I’m just really excited about the future.”

“Love you!” Kylie adds.

Kylie also took to Instagram to celebrate her dad, writing: “Happy birthday to my main squeeze. You’ve never failed me! I love you.”

Kim, 35, honored Caitlyn’s special day on Instagram with a sweet selfie of the two from brunch.

“Happy Birthday Caitlyn!” she wrote. “Are you 66 or is Caitlyn 1? lol That was the debate at our bday lunch yesterday! Have the best day ever filled with lots of love & laughs! You have shown me what it’s truly like to live an authentic life without caring what the world would think! I love you!”

Kim also dedicated a “#WomanCrushWednesday” post on her website to Caitlyn, writing: “What a brave soul! I’m happy you’re living your authentic life!”

Kendall, 19, celebrated Caitlyn for being “the most wonderful, sweetest person” she knows.

“You have always been there for me, whether it was teaching me to ride a bike or picking me up from school everyday or just being a shoulder to cry on,” Kendall wrote. “You are my hero and the reason I am the person I am today. I’m soooo proud of everything that you’ve been through and accomplished this year. Love you, dad! I hope this birthday is your best one yet. :)”

Khloé, 31, encouraged Caitlyn to “get glam, girl!” in a post on her website.

“Happy birthday to one of the most inspirational people I know. It’s your first birthday, and I couldn’t be more thrilled for you to celebrate it style,” she wrote.

Khloé remains by her ex Lamar Odom‘s side at Cedars-Sinai Medical Center in Los Angeles, but Caitlyn was joined by Kourtney Kardashian, Kim and Kylie for a celebratory brunch at The Villa Restaurant in Woodland Hills, California, on Tuesday.

Kim Kardashian West Opens Up About the First Time Her Daughter North Met Caitlyn!

On Tuesday evening, Caitlyn attended Logo TV’s Beautiful As I Want To Be web series launch party, where she acknowledged this was her “first birthday” since “coming out.” The festivities were also filmed for season 2 of Caitlyn’s docuseries, I Am Cait.

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