No question, Miley Cyrus had a banger of a time at the 2024 Grammys. 

After racking up eight nominations over the course of her career, she finally won two—Best Pop Vocal Performance and Record of the Year—for her mega-hit "Flowers." The Feb. 4 ceremony also doubled as a date night for Miley and boyfriend Maxx Morando and a family outing with mom Tish Cyrus and sister Brandi Cyrus.

But we can't help but ask, why did Miley thank her mother and sibling during her Record of the Year acceptance and then so pointedly add, "I don't think I forgot anyone—but I might've forgotten underwear. Bye!"?

Miley comes from a big family and has a slew of friends and artistic collaborators she could've spent five minutes thanking, so you can't expect a girl to namecheck everyone when she's only got 45 seconds to communicate a lifetime of appreciation.

Which is probably why she followed up the morning of Feb. 5 with a lengthy Instagram post once again thanking Tish and Brandi, as well as her godmother Dolly Parton, Grammy presenter Mariah Carey for "being so iconic," her fans and many more.

"My lover, my momos, my friends, my collaborators , @kidharpoon @tylersamj @pollackmusic @aldaelong , every single person who made this song and album possible!" she wrote. "My team (a little extra love to the glam team) , Bill Sobel who is my hero and doesn't have Instagram so will probably never see this, Crush Music , Olivia + FANMADE, Ron Perry and all of Columbia records."

For the record, Miley also noted in a subsequent post, "PS I was only kidding…. I had on matching custom @gucci panties."

But notably missing from both of her speeches and all posts from the day after was any mention of her father, Billy Ray Cyrus, who did help his daughter get her start back in the day when they starred on Hannah Montana together. More recently, he swapped vows with Australian singer Firerose and Miley did not attend their October nuptials.

E! News reached out to a rep for Billy Ray to see if he had any comment on Miley's big night and has not yet heard back.

While Miley isn't exactly a shrinking violet and her candor about some things is legendary, she's stayed pretty mum about any issues with her immediate family—and some have sprouted since she made an appearance with both of her then-still-together parents at the Grammys five years ago.

Here's a guide to the once extremely tight-knit Cyrus family and why some members aren't as close as they used to be:

Billy Ray Cyrus married Tish Cyrus (née Leticia Finley) on Dec. 28, 2003.

At the time they already shared 12-month-old daughter Destiny Hope Cyrus—you may know her as Miley Cyrus now—and Tish was pregnant with their son Braison Cyrus, who was born May 9, 1994.

Seven months before Miley was born on Nov. 23, 1992, Billy Ray's ex-girlfriend Kristin Luckey gave birth to their son Christopher Cody Cyrus on April 8.

When the "Achy Breaky Heart" singer married Tish, he adopted her daughter Brandi Cyrus (born May 26, 1987) and son Trace Cyrus (Feb. 24, 1989), whose biological father is their mom's ex-husband Baxter Helson.

Trish and Billy Ray's youngest, daughter Noah Cyrus, was born Jan. 8, 2000.

From 2006 to 2010, Billy Ray played the father of Miley's normal-kid-who-moonlights-as-a-pop-star character in the Disney Channel sitcom Hannah Montana and a 2009 film adaptation.

While the Cyrus family was still based in Nashville, Billy Ray and Miley made the move to L.A. to jumpstart her own entertainment career.

Billy Ray and Tish announced in October 2010 that they were getting divorced, but by the following year were back together.

They filed for divorce again in June 2013 but reconsidered barely a month later, telling E! News at the time that they'd been to couple's counseling and it had done wonders for them.

But before they reconciled, when the news broke that her dad had made the first move in a Nashville court to end his marriage after 19 years, Miley tweeted, "@billyraycyrus since your text and email obviously aren't working would you like to talk like this?"

After a decade of being together off and on, and in the wake of losing their Malibu home in a fire, Miley and her The Last Song co-star Liam Hemsworth married in December 2018.

The decision came "from a place of trauma and just trying to rebuild as quickly as we could," Miley recalled on her "Used to Be Young" TikTok series.

But Liam filed for divorce in August 2019 and they finalized the paperwork in January 2020.

"It's honestly very simple," a source told E! at the time. "They fell in love when they were young and they are just different people now."

Tish and Billy Ray became grandparents in 2021 when their son Braison and his wife Stella welcomed son Bear Chance Cyrus on June 8. 

Tish filed for divorce fo a third time in April 2022, and this time it stuck.

Moreover, her petition citing "irreconcilable differences" noted that she and her husband of almost 30 years hadn't lived together since February 2020. 

"It is after 30 years, five amazing children and a lifetime of memories, we have decided to go our separate ways—not with sadness, but with love in our hearts," Tish and Billy Ray told People in a statement. "We have grown up together, raised a family we can be so proud of, and it is now time to create our own paths."

The exes noted that they hadn't come to the decision to split up for good "lightly or quickly," adding, "We will always be family and look forward to a continued and loving shared experience as friends and parents."

Billy Ray quietly got engaged to Australian singer Firerose, who's 27 years his junior, in August 2022 but waited to confirm the news until that November.

"Growing up in Australia, my love of music was predominant over everything," Firerose told People. "I've known his music since forever."

What started as a friendship turned into more during the darkest days of the COVID-19 pandemic.

"All of the sudden, the life that I've always known as a touring artist didn't exist anymore," Billy Ray said. "A moment of so much change. And at the same time, Firerose, who had been such a light of positivity, such a best friend. And then when we began sharing the music, it just evolved more into, as musical soulmates, to soulmates, happy, pure love that to me, I didn't know could exist."

Around the time her ex-husband confirmed his engagment in November 2022, Tish went Instagram-official with Prison Break actor Dominic Purcell.

They got engaged in April 2023 and tied the knot that August in Malibu at sunset with Miley, Trace and Brandi all standing by their mom's side.

"Life is unpredictable & always full of changes," Trace captioned a photo of himself and two of his sibling with the bride. "I think the most important thing to do is cherish the past, look forward to the future, & always be happy in the present moment because that’s really all we have."

"To see my mom this happy and in love is very emotional for me," Miley told Vogue last summer ahead of her mom's wedding. "Dom and my mom share the sweetest, most genuine love. It's almost like it's for the first time, which is so fitting for my mom who is such a young soul."

As for her dad's next chapter, however, a source close to Miley told E! News in October 2022 that she wasn't in love with it and didn't have a relationship with her future stepmom.

"The divorce between her parents put a strain on her relationship with her dad and it's been hard to connect with him in the last year," the source said. "She hopes they can eventually work on their relationship."

Billy Ray told People that November, however, that his family had "no hard feelings" about his engagement.

"Everybody's turning the page," he said. "It's been a lot, but everyone knew that it was time for a change."

He and Firerose got married on Oct. 10, 2023, calling it the "beautiful, joyous day that our two souls united as one in holy matrimony."

Whatever rift opened up between Miley and her dad apparently hadn't been repaired by the night of the 2024 Grammys on Feb. 4.

Tish and Brandi were there, as was Miley's boyfriend Maxx Morando, and they all got shout-outs when the "Flowers" singer won Record of the Year.

As Miley concluded her speech, "I don’t think I forgot anyone."