"Being your daughter has been a gift, today and every day. Thanks for always showing me how it's done," the former first daughter shared on Twitter, along with a throwback photo from her childhood.
"So grateful you're Charlotte, Aidan & Jasper's Grandma. Happy Mother's Day to the best, @HillaryClinton !! Love you Mom," Chelsea added, referencing her three children with her husband of 10 years Marc Mezvinsky. (They share three kids: Aidan, 4, Jasper, 19 months, and Charlotte, 6.)
Also on Sunday, Mrs. Clinton, 73, who welcomed Chelsea in Little Rock, Arkansas, on Feb. 27, 1980, posted a photo from her daughter's wedding day. "Verified Grateful to be my mother's daughter and to be my daughter's mother. Happy Mother's Day!" she wrote.
In February, the former first lady celebrated her daughter's 41st birthday by sharing a throwback photo from when she was a child to Instagram and Twitter. "Happy birthday, Chelsea. You've always had lots of opinions, and I'm so proud of how you use your voice for good," Mrs. Clinton wrote.
The past year has been an exciting one for Chelsea who released her children's book, She Persisted in Sports.
In March, she released a picture book along with her mother called Grandma's Garden. The book was inspired by the former first lady's late own mother, Dorothy Rodham, who loved to read and garden with them both, and was released by Philomel Books on March 31.
Chelsea recently opened up about all things motherhood in an interview with PEOPLE, when she spoke about how COVID-19 has impacted raising her own kids.
"[There are times when] I'm on my Zoom and [4-year-old son] Aidan's science class is crashing and then I'm off my Zoom rushing to fix the science class," she said. "And then I can't stay with him to make sure he gets back on the science class. Then I'm running back into the next room to get back on my Zoom and then I feel like, 'Oh my gosh, I'm not doing either thing very well at the moment, but hopefully doing each as best as I can.' "