Kathy Hilton, Lisa Rinna, Erika Jayne & More Wish Kyle Richards Happy Birthday

Kyle Richards turns 53!

In celebration of her special day, her famous friends posted sweet tributes on social media.

"Happy Birthday to my sister. I love you Doogie. ♥️" Kathy Hilton wrote in her post, along with a picture of the siblings. For those who don't know, the philanthropist gave the nickname to her sister since childhood.

Many of her other "Real Housewives of Beverly Hills" co-stars also wished Richards a happy birthday on the photo-sharing site, including Lisa Rinna, Erika Jayne, Dorit Kemsley, Sutton Stracke, Garcelle Beauvais, and Crystal Minkoff.

The Rinna Beauty founder uploaded a hilarious clip of Richards parading Rinna's leopard-padded wrap coat.

"HAPPY BIRTHDAY @kylerichards18 ✨✨" Rinna captioned her share. "You are hilarious, we love you so much! Hope this year brings you everything your heart desires! You deserve the world and more! You give so much joy and love to everyone you touch. 🎂❤️💗❤️💕🍸🐆😘🥳"

Meanwhile, the "Lowball" actress posted their selfie together.

"Happy birthday @kylerichards18 !!!" she wrote, while also noting that Richards is "The heart and soul of #RHOBH 🥳✨❤️"

As for Kemsley, she uploaded a mixture of photos and clips taken over the course of their friendship. Her post marked her return to social media following the home invasion incident in October.

"Coming back to insta(after a much needed break 😌) to wish my beautiful friend @kylerichards18 a very happy birthday!" she wrote. "I love you so much Kyle and I have the best time with you! I love how we laugh until we need to pee, can talk about anything, support one another, bond over the love our families and the love of Hermès(and all things designer), and I love that our hubbies are besties too. May all of your wishes come true today and always. Love you! 🎂🥳♥️😘"

Stracke shared two snaps featuring herself, Richards, and their co-stars Hilton and Beauvais.

"Happiest birthdays to this beauty @kylerichards18 From chilly to sunny you put a smile on my face. 😽💙💚💛" she wrote.

Beauvais' tribute was a simple photo with a "Happy Birthday" note uploaded to her Instagram Story. Minkoff did the same, only that she published a video of Richards dancing with her brother, Jeffrey Kung.

"Happy Birthday to one half of a duo I never knew I needed @kylerichards18," she wrote.

Jamie Lee Curtis also penned a heartfelt tribute to the reality star. Curtis and Richards both starred in the 1978 horror/thriller, "Halloween."

Curtis played Laurie Strode, while Richards portrayed the 8-year-old girl Laurie babysat. They reprised their roles for the most recent film in the franchise, "Halloween Kills," which debuted last year.

"Watching @kylerichards18 grow into the incredible woman she has become, raising women of her own, collaborating with other women and is always up for a fight for justice and is a spectacular advocate for Children's Hospital Los Angeles and I could not be prouder to be continuing our long legacy with Halloween with our long legacy of support for Children's Hospital together," Curtis captioned the post.

She added, "You can honor her birthday today by making a donation directly to Children's Hospital Los Angeles or going on my store @my_hand_in_yours which supports Children's Hospital with 100% of all profits and whatever you buy mark it as a gift from Kyle on her birthday and we will make sure to add that to the note. Happy birthday Kyle. The world is a much better place because you're in it."