You knowthat one song.

And you sure as hell-o-operator know hershoes.

But this Texas-grown superstar singer-turned-billionaire fashion mogul is more than just a pretty pair of pumps.

young Jessica Simpson

Let’s just say it’s been a long time since that “Chicken of the Sea” moment.

So, saddle up.

We’re about to find out whySimpson’s boots are made for walkin'.

young Jessica Simpson

And shedidn’tland the part.

She evencredited that disappointmentas a motivator toward taking future acting and singing lessons.

And what was Lachey thinking the first time he met Simpson?

Jessica Simpson and Nick Lachey

“I’m going to marry that girl.

“And he would.

“The main ingredient, I know now, is confidence.

Jessica Simpson smiling

I really feel equipped for what’s going to come.”

But there were growing pains, too.

Forfive monthsthat year, Simpson broke it off with then-boyfriend Lachey.

Jessica Simpson singing

“Nick was patiently waiting for me to grow up a little.

I knew that I never ever wanted to be away from Nick for the rest of my life.”

Or,until 2005.

Jessica Simpson and Eva Longoria

She knew fashion then, and a$1 billion fashion empirelater she sure knows it now.

That’s so lame!'

I was like, ‘Fine, then get in the trunk.’

Jessica Simpson posing

But she may have had more personal reasons for avoiding the papz.

I really just have to detach myself from the world of gossip and preconceived ideas.”

“I mean, people don’t know much of anything about [Dolly’s] personal life.

Jessica Simpson smiling

That’s something I’m absolutely jealous of.

I don’t know how she did it.

I’ve got to get some tips.”

Jessica Simpson smiling

“So it’s less about how they look and more about conditioning.”

To fit into those famous hot pants, an already slim Simpson got even more toned.

“I can’t promote squats and step-ups enough,” Alexander toldShapewhen asked about backside shaping workouts.

Jessica Simpson singing

“you’re able to do them anywhere with very little or no equipment.”

Before taking on the role of Daisy Dukes, Simpson said she “didn’t have a butt.”

But it wasn’t just exercise that helped Simpson attain her flawless Daisy Dukes figure.

Jessica Simpson at an event

“I’ve been through it myself and understand the pressures.

We’re all facing the same struggles together, whether you’re a celebrity or not.”

Still, the mama-to-be embraced her new, curvier figure, evenposing nude for the cover ofEllemagazine.

Jessica Simpson smiling

“When I had Maxwell I gained a lot of weight.

More than I thought I would,” Jessica Simpson toldthe MomFeeds blog.

“And when it came time to have a go at take it off, it felt overwhelming.

Jessica Simpson smiling

Stepping on the scale and seeing that number was really scary.”

She lost a total of 60 pounds post-baby.

Health came first with baby No.

Jessica Simpson

2

It wasn’t long before little Maxwell became a big sister.

In 2013, Jessica Simpson became pregnant with her second child, ababy boy she would name Ace.

She looked stunning when she stepped out for a Macy’s event in her full preggo glow.

Jessica Simpson posing

“With Maxwell, I vegged out and laid around.

I kind of let loose, and I gained a lot.”

Simpson said she maintained a “healthier lifestyle” during her second pregnancy and that she kept exercising.

Jessica Simpson smiling

And she was still refusing to let the body shamers bring her down.

She also noted that her husband has always made her feel beautiful.

“He’s always loved every curve on my body,” she said.

Jessica Simpson laughing

“I have been every size there is,” she toldWomen’s Healthin September 2016.

Every woman should feel like she can wear what the model is wearing down the runway.”

Putting her money where her mouth is, her athleisure lineThe Warm Upfeatured over a dozen plus-size options.

Jessica Simpson with kid

“I want to be your friend and dress you and say, ‘You look good, girl!

‘,” she said,speaking to all of us.

She can look like Jessica Simpson, smell like Jessica Simpson, and she can afford it."

Jessica Simpson and Eric Johnson

I just relate to all of it.

So we reach out to all ages.

She has the hugest clothing closet um, we mean warehouse!

Jessica Simpson and Eric Johnson

“I’m a vintage buyer so I collect.

I have all my prom dresses.

All my music video and movie outfits.

Jessica Simpson with her parents

I went to a lot of proms.

That’s why we have a warehouse,” Jessica Simpson shared withPeople.

And she’s nostalgic about every last thing she owns!

Jessica Simpson, Eric Johnson, Ashlee Simpson, Evan Ross

She continued inPeople, “I’m a keeper for my daughter [Maxwell].

All I want to do is keep everything.

And everybody is like ‘Throw it out, throw it out.’

Jessica Simpson singing

The clothes are memories.”

Jessica Simpson finally made a touchdown withformer NFL tight end and Yale graduate Eric Johnson.

“It’s all about family for us,” Simpson toldPeople, when the couple wed in 2014.

Jessica Simpson smiling

“Before I walked out, I kept hearing all the applause … my kids got standing ovations!”

on keeping that spark alive.

“I think the secret to a beautiful, loving marriage is just making out!

Jessica Simpson with her family

Don’t forget to kiss.

It always begins with a kiss,” she toldPeople.

And for Simpson, her love advice is hard-earned, and well-practiced.

Jessica Simpson smiling

Thankfully, he is now healthy and in remission.

Joe and his daughter have always been close.

He gave up his position as church minister for beSimpson’s and her sister Ashlee’s managerback in 1993.

We’ve been doing it since I was 13.

So, at this point, we’re in a good rhythm.

A lot of people find it strange, but it’s the only way I know.

And I don’t care to know another way, because it suits me.

And we’ve done a pretty dang good job."

She had her own room, but it was just more comfortable for us to sleep together."

These days, the sisters leave the sleepovers to their kids, and hit the town with their hubbies.

“That’s how I started.

Her professional foray into music began at age 14, when she wowed an audience at Bible camp.

Not much has changed through the years in that regard.

There’s a lot to talk about.

There’s a lot to sing about.

There’s a lot I feel like people will relate to.”

Besides looking gorgeous and toned in an itty-bitty bikini, Simpson looked happier than ever.

She’s enduredyears of criticism about her weight, only to essentially become every woman’s fashion bestie.

She’s as relatable, as she is inspiring.

As goofy as she is honest, and as genuine as she is loyal.

The photo demonstrated just how much work she’d done to get fit and healthy.

And she did full body workouts once she was strong enough.

Overall, Pasternak ensured his long-time client was never bored and never pushed too hard.

Striking the balance was what ultimately made the (huge!)

difference for the busy working mother.