'Sports Illustrated' Swimsuit Editor Rocks a Bikini & a Toddler for Body Positivity

"If I'm going to talk the talk I am going to walk the walk," she wrote -- and it's just part of the powerful caption that proves this lady truly wants all women to feel their very best. 

After 19 years producing the issue, Day is proud that this year's edition represents the most diverse group of ladies ever. In teaming up with the @WomenIRL Instagram account and Health.com, she and Sports Illustrated are celebrating strength, beauty, and determination.

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"I'm determined to get out the message that there is not a singular definition of beauty," she says. 

The inspiring mama is calling on women everywhere to throw on their bikinis and share what they "model." 

Listen to her awesome statement: 

Deep.Breath. If I'm going to talk the talk I am going to walk the walk. Please consider participating. It was equally terrifying and liberating for me. Funny how I have spent my life on a beach since childhood and I have never truly felt comfortable in a swimsuit. Even at my thinnest. We need to love ourselves in the present. No matter what. I invite you all to do so. ð��±ð���ð��»â�¤#50shadesoftan Repost @womenirl with @repostapp ã�»ã�»ã�» Introducing the #WhatIModel campaign, a partnership with @SI_Swimsuit and @healthmagazine. This year's Sport’s Illustrated Swimsuit issue is the most inclusive ever and features women of various ages, backgrounds and body types. We’re celebrating this vision of beauty and confidence on our feed… in our swimsuits. Because you should feel beautiful no matter what you wear, and we’re ready to love our swimsuits again. Meet @mj_day, the editor of SI Swimsuit, and find out what *she* models. Then, upload your own video (in your suit) and tag it #WhatIModel & #LoveYourSwimsuit for the chance to be featured here. Stay tuned all week for inspiring messages about body confidence and authenticity. #womenirl

A post shared by MJ Day (@mj_day) on Feb 15, 2017 at 6:25am PST

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You have to admire her honesty when she writes: "Funny how I have spent my life on a beach since childhood and I have never truly felt comfortable in a swimsuit. Even at my thinnest. We need to love ourselves in the present. No matter what. I invite you all to do so."

She's so right. And the women she's celebrating in the issue are thrilled to echo her thoughts. Beauty can't be defined by a number -- whether that number be your measurements, your age, or your weight. 

Her colleagues are also "walking the walk" and proving that beauty is all around us -- especially in our spirits. 

My girls, my sisters, my babies, my ride or dies, I could not do ANY ANNNNY of this without my incredible team that supports me in every way. You have no idea the value of two human beings until you know @ja_neyney and @darciebaum. Indispensable, irreplaceable and absolutely integral to making all the magic happen here. Plus how hot are they!?? #WhatIModel #LoveYourSwimsuit @womenirl they are roleMODELS. You are the wind beneath my wings. Plus you keep me alive. Lol

A post shared by MJ Day (@mj_day) on Feb 15, 2017 at 8:10am PST

While winter might be the toughest time to toss on a bikini and feel fabulous, Day's message is timeless. So whenever you're ready, grab that swimsuit and love yourself in the present.