Caitlyn Jenner posted an Instagram tribute for her daughter, Kendall Jenner, just after she celebrated her first birthday as a transgender woman.

According to a report from Perez Hilton, Caitlyn Jenner took to Instagram to greet her supermodel daughter a happy birthday.

The image was uploaded by Caitlyn Jenner on Instagram last Tuesday, which showed a young Kendall Jenner smiling with one missing tooth.

"Can't believe my toothless little girl is so beautiful and 20 years old... Daddy loves you!" she captioned the throwback shot.

The "Keeping Up with the Kardashians" patriarch shared the said greeting just after she herself celebrated her own birthday.

According to a report from Vanity Fair, the former Olympian turned transgender advocate was excited about turning 66-years-old. The controversial TV star pointed out that it was officially her first birthday as a female.

"Technically it is my 'first' birthday, and I got to share it with a couple of my daughters today," Caitlyn Jenner said during her celebration.

"We had a wonderful lunch. Certainly, since coming out, this is my first birthday."

Prior to her first birthday as a woman, Caitlyn Jenner detailed her journey into becoming a female with her docuseries "I Am Cait."

E! Online reported that the show was been renewed for another season.

"Caitlyn's story has ignited a global conversation on the transgender community on a scale that has never been seen before," said Jeff Olde, EVP of Programming and Development at E!.

"We are honored Caitlyn has chosen to continue to share her ongoing story with our viewers around the world."

However, some questioned why "I Am Cait" was renewed for another season even though the pilot run did not rate well.

Per Reuters, the premiere episode gathered only 2.7 million viewers, far from the reported 17 million people who watched Caitlyn Jenner's Diane Sawyer tell-all interview.