Meghan Markleand Prince Harry’s 2018 wedding made international headlines for many reasons.

Markle become an American princess ina real-life fairy tale wedding, but not everything was picture perfect.

Just what is the deal between the two sisters?

Meghan Markle

Do they actually hate each other?

Why wasn’t Grant at her sister’s wedding?

And what exactly drove the wedge between them in the first place?

Meghan Markle, Samantha Grant

Here’s everything we know about the relationship between Meghan Markle and her half-sister.

Grant told theDaily Mailthat her sister even had a special nickname for her when she was growing up.

“She called me that up until she was 12, then she would call me ‘Babe.’

Samantha Grant

She’d ring me up and say: ‘How’s it going, Babe?'”

The family patriarch, Thomas Markle,worked as a lighting directoron the showsMarried With ChildrenandGeneral Hospital.

But Markle is not the only member of the Markle family to try her hand at acting.

Meghan Markle

Hersole credit onIMDb, aside from personal appearances, is a guest-starring spot onMatlockin 1993.

“Over the years she would call me.

We were not close but we stayed in contact,” she toldThe Sun.

Meghan Markle

In spite of this, Grant said that she and her sister have not been in contact for years.

“She said: ‘Are you sitting down?

Did you know your sister is dating Prince Harry?'”

Meghan Markle

“My friend obviously thought I’d be shocked.”

Grant said that she hasn’t seen her sister since 2008, when Markle attended her college graduation.

In spite of their estrangement, she said that she wouldn’t call her family dysfunctional.

Meghan Markle

“I don’t think we are more dysfunctional than any other family,” she said.

“Every family has their issues and challenges and you have to roll with them.

With all due respect, theroyalshave had their own issues.

Meghan Markle, Samantha Grant

They haven’t had perfect lives themselves.”

Just as with the news of the relationship, Grant reportedly received notice about the engagement secondhand.

“It was really exciting for me, I am so happy for her,” she toldUs Weekly.

Meghan Markle

She added that her father was also thrilled.

“He’s very excited… he is truly happy about their union,” she said.

That’s really important for us."

Meghan Markle

She explained that she wasn’t atMarkle’s 2011 weddingto TV producerTrevor Engelsonbecause it took place on the beach.

Her presence was also missing at Markle’s royal wedding.

But she wasn’t the only member of the family not to be invited.

Meghan Markle

“I have to say, I’m not taking it personally,” she said.

“It’s not just me.

None of the family have received invites, nor have [Markle’s mother] Doria’s family.

Meghan Markle

So although we don’t understand we can only wish them well.”

She added, “I’m not taking it personally nor am I holding that against her.”

Early in 2019, theDaily Mailpublished a handwritten letter allegedly penned by the Duchess of Sussex to her father.

Meghan Markle

“like allow us to live our lives in peace.

Grant was also upset about the designer gown Markle wore for her engagement photo shoot.

“That’s how I feel, that’s who I am.”

Meghan Markle

Grant has bashed her sister’s humanitarian efforts

Markle has long been a philanthropist.

Early in 2019, the Duchess of Sussex and her husband visited Bristol’s One25 charity.

That is what #humanitarians do.

Meghan Markle

Grant also alluded to her sister’s estranged relationship with their father in her tirade.

Just my humble opinion,” she wrote.

The second part is set to be released in July 2019, shortly before her sister’s birthday.

Meghan Markle

“She does not have an outlandish lifestyle so the money will make a difference to her.

Is there racism in the Markle family?

Meghan Markle’s childhood seems to have been a happy one, for the most part.

Not everything about her upbringing was perfect, though.

Markle’s birth allegedly stirred up a lot of racism in the family as well.

“But the rest of our house was color-blind her childhood was magical.

We made it fun for her.”

She has just been trashing everybody in her life forever.”

“‘Meghan looked wonderful and I thought her dress was classically beautiful,” Roslyn said.

“[Her mother] Doria looked proud and lovely.”

She added, “‘I wish them all the best.

I hope they go on to have a long and happy union.”

“I think our wedding will bring the family closer together,” he said.

“Hopefully we can have a heart to heart,” she toldUs Weeklyafter Markle’s engagement was announced.

“I want her to know I’m wishing her well and there for her.

At the end of the day, I want her to know that the love is there.”

In December 2018, Grant reached out to her royal sibling and sent her a Christmas card.

The card wished her sister a merry Christmas and also begged Markle to reach out to their father.

The next day, however, Grant retracted her Christmas greeting.

[Meghan Markle] shame on you for what you have done to our father.

No PR machine can fix this.

I retract the merry Christmas, you don’t deserve it.

How dare you walk into a church."

Grant continued to publicly berate her sister for spending the holiday with the royal family.

“Apparently you’re not capable and I don’t know enough profane words to articulate how I feel.

Something tells us that Markle and Grant won’t be making up anytime soon.