Jessica Biel, Son Silas
The actress posted on Instagram this photo of her with her and husband Justin Timberlake's son, saying, "Happy Mother's Day to you, Mom. I only, just now, understand what you did for me. And to all moms everywhere, I'm having a champagne in your honor. And when I say champagne I mean seltzer water cause mama's gotta do carpool in the am. #momlife."
Candice Swanepoel
The pregnant supermodel posted this pic on Instagram and gave a shout-out to fellow pregnant Victoria's Secret Angel Behati Prinsloo, writing, "Happy Mother's Day to all the amazing mothers in my life and happy almost mama's day to us @behatiprinsloo. So much love already."
Ryan Reynolds & Mom Tammy Reynolds
"Happy Mother's Day, Mom," the actor wrote on Instagram. "You gave birth to me an excruciating 468 weeks late. I was 9. We were both so happy to be free."
Blac Chyna & Son King Cairo
The glamour model shared this collage of pics of her with her and Tyga's 3-year-old son.
Drew Barrymore, Daughter Frankie, Mother-in-Law Coco Kopelman
"Three generations. Grammy. Me and Frank's. @cocokopelman #happymothersday #iheartgrammy," the actress wrote.
Kourtney Kardashian, Kylie Jenner & Kendall Jenner
Kylie posted on Instagram this photo of the sisters wearing KISS parody shirts that pay tribute to mom Kris Jenner.
Khloe Kardashian & Mom Kris Jenner
"To the most selfless person I know," Khloe wrote on Instagram. "Mom, the words 'I love you' are not adequate enough to express how grateful I am to be your daughter, how much you are appreciated or how much you will always mean to me, so I will simply say: Thank you mom for being my superhero, my inspiration, my miss fix it, my problem solver, my expert-in-everything, and most importantly my very best friend."
Dwayne Johnson & Mom Ata Johnson
"Asked my mom to text me one of her fav pics of us and I get this," The Rock wrote on Instagram. "Thanks mom I was hoping for a pic where I'm less dork and not needing a puberty bra. Ah what the hell, it's funny. Happy Mother's Day Mom!"
Olivia Wilde, Son Otis
The Vinyl actress posted this photo of her and Jason Sudeikis' son during a supermarket trip.
Nicky Hilton & Mom Kathy Hilton
Nicky posted this photo from her wedding day, saying, "Happy Mother's Day mom. You are amazing and I'm so proud to be your daughter."
Tyra Banks, Son York Banks Asla, Mom Carolyn London
The supermodel and TV host posted this three generations photo, saying, "I'm hearing, 'Happy Mother's Day' and I can't believe how lucky I am! Of all the fashionable hats I wear, I love being a #mother the most. #HappyMothersDay from me and my mama to all the wonderful women of the world!"
Ivanka Trump & Mom Ivana Trump
Donald Trump's daughter posted this throwback photo of her and her mom on her Instagram page, saying, "Happy #MothersDay to my amazing mom. You've taught me so much—you truly lead by example. I hope one day my children look up to me as much as I look up to you."
Chrissy Teigen & Baby Luna
The TV host and model's husband shared this sweet photo on Instagram, saying, ""To my wonderful wife, @chrissyteigen. Luna and I are so lucky to have you in our lives. If our daughter can be even half as awesome as you, I will be so happy and proud. Happy 1st Mother's Day!"
Kevin Jonas' Wife Danielle Jonas & Daughter Alena
Kevin posted this photo of his wife and daughter, saying, "Happy Mother's Day to you baby! Me and Alena and ? Love you." He and Danielle revealed in April two weeks before Mother's Day 2016 they are expecting baby No. 2.
Carrie Underwood & Family
The singer's husband, NHL star Mike Fisher, posted on his Instagram page a photo of his wife with their son Isaiah and his mother. He wrote, "Very blessed to have these 2 strong, beautiful and Godly Moms in my life! #happymothersday."
Madonna & Kids Rocco Ritchie, Lourdes Leon, David Banda & Mercy James
Madonna appears with her children in photos posted on her Instagram page. "Most Inspiring and Challenging adventure of my life!" she wrote. "Happy Mothers Day to all who are riding this roller coaster of L♥O♥V♥E!"
Sarah Michelle Gellar & Mom Rosellen Gellar
The Buffy alum and Cruel Intentions star shared this sweet throwback photo, saying, "#happymothersday This picture is three #generations. Thank you to my #mom for teaching me everything she knew and encouraging me to learn more."
Kourtney Kardashian & Kids Mason Disick, Penelope Disick and Reign Disick
The reality star shared a sweet throwback pic of her and ex Scott Disick's three children on Mother's Day 2016, writing, "Feeling overwhelmed with love and blessings being able to be a mommy to these three angel babies. My favorite role in life so far is being a mommy and getting to see life through their eyes. Happy Mother's Day!"