'Kids humble us': Serena Williams encourages moms to share their stories of motherhood

Serena Williams has been brutally honest and outspoken about motherhood since giving birth to her daughter, Alexis Olympia Ohanian Jr., nearly one year ago.

Now Williams -- who has addressed breastfeeding, postpartum depression and more -- is encouraging other moms to share their personal stories.

“Kids humble us,” Williams, 36, wrote on Instagram Sunday, sharing a story of her daughter throwing up on a plane flight.

Kids humble us. The other day on a flight home Olympia had so much energy and insisted on running up and down the aisle. When I finally got her to calm down and sit still, she threw up all over me and in the aisle. #ThisMama wants to remind all mothers the importance of supporting one another through the highs, lows, laughs and tears. _ Share your own stories of motherhood with hashtag #ThisMama. I’d love to hear them!

A post shared by Serena Williams (@serenawilliams) on Aug 26, 2018 at 1:12pm PDT

“#ThisMama wants to remind all mothers the importance of supporting one another through the highs, lows, laughs and tears,” she wrote. “Share your own stories of motherhood with hashtag #ThisMama. I’d love to hear them!”

They are always staring at me ??

A post shared by Alexis Olympia Ohanian, Jr. (@olympiaohanian) on Jul 24, 2018 at 7:23am PDT

Moms everywhere are replying to Williams, who plays her first-round match at the 2018 U.S. Open Monday.

Take a look at just some of the exhausting, heartwarming, loving and very relatable moments moms are sharing.

I once breastfed my baby while leading a graduate student meeting & she then promptly had a poop-explosion that even soaked MY pants. #ThisMama #parenthood #MultitaskingLikeABoss

— Hillary Melchiors PhD, MPH, LCCE, CD(DONA) (@HillaryMelch) August 26, 2018

Absolutely love the #ThisMama conversation, because the memories do not go away. I asked my child (under the age of 4) why did you use that naughty language - with utter embarrassment at the profanity and zeal. With no expression she replied, “I got all the words from you.”

— Aimee A'Laine (@newjoynjourney) August 26, 2018

#ThisMama held her 3 y/o tight while she had a meltdown at a science museum and sat there while she screamed very publicly for what felt like forever.

Three different women stopped to say “hang in there” and “you’re a good mom” #ThisMama is thankful for kindness of other mamas. https://t.co/bjagVMVal9

— Rachael Horwitz (@RachaelRad) August 26, 2018

My daughter, last night she kept me up until 4am kicking and screaming in her sleep about spiders. I have a bruise on my stomach and this morning when she woke up and I asked her what she was so upset about she just laughed and didn’t remember. #ThisMama salutes all the other moms who sacrificed their bodies, minds and sleep for their precious Babies. #kidshumbleyou

A post shared by Brianna (@briannamdg) on Aug 26, 2018 at 1:18pm PDT

Borrowed my dad’s truck. Put daughter in the back. She spilled her RED drink ALL OVER the back seat. I pulled over. Got her out of the truck. She was crying hard. I’m consoling her. She barfs ALL OVER ME. Cries more. Covered in barf, I pick her up. She pees her pants. #ThisMama

— fmpw (@FMPreachersWife) August 26, 2018

My daughter and I planted some seeds together, hoping to grow flowers. I went outside to water them and told her to watch. She locked the sliding glass door on me. #ThisMama got locked out of the house by her two year old

— Megan (@m_pedrianes) August 26, 2018

When my child was a toddler, #thismama got dressed up for a very rare night out with friends. As soon as we got to the sitter’s front door, my girl vomited. #thismama cleaned up the vomit, and took my baby back home. But I gets so much better. Hang in there @serenawilliams https://t.co/y3iOdfsRcj

— Tracey (@traceydc66) August 26, 2018