Beyoncé Sparks Fans' Excitement For Act III In Emotional Message About 'Cowboy Carter' Tour

Beyoncé has seemingly addressed the retirement rumors, letting fans know there is more music to come.

The legendary singer is on her ongoing "Cowboy Carter" tour, after kickstarting the European leg with six concerts in London, which began on June 5.

Now, as she says goodbye to Britain, Queen B left fans an "Easter egg," teasing her next chapter, which many have referred to as "Act III."

Following her sixth night of performance at the Tottenham Hotspur Stadium, the singer took to Instagram to pay a special tribute to British icon Sir Paul McCartney.

The Beatles frontman wrote the song "Blackbird," which Beyoncé covered in her Grammy-winning eighth studio album, "Cowboy Carter."

"Thank you, Sir Paul McCartney, for writing one of the best songs ever made," she gushed in the caption. "Every time I sing it, I feel so honored. And it is a full-circle moment to wear your beautiful daughter's design."

Alongside the message were photos of Bey in a white bodysuit featuring two bedazzled black birds on her bosom area, paired with denim fringe chaps. Concluding her post, the songstress sent her love to the city before promising to make a grand return.

"Thank you, London, for creating unforgettable memories for me and my family. Holla at ‘ya when I come on tour again."

Sir McCartney wasn't the only legend Beyoncé honored on the final night of her London stop. Earlier, while on stage, fan-recorded clips showed her rocking a vintage Tina Turner "What’s Love Tour" t-shirt.

The 43-year-old paired the oversized, long-sleeved white apparel with a cowboy hat and several layers of stacked diamond necklaces. One clip showed her fighting back tears as she pointed at her idol on her chest.

Beyoncé has often been vocal about her deep adoration for the late Turner, often crediting her as one of her biggest musical influences. With Turner's legacy as the "Queen of Rock 'n' Roll," many believe the shirt is proof that Queen B's third act of her "Renaissance" trilogy will be the Rock genre.

"She's sending a message: Acts III is inspired by Queen of Rock, Tina Turner," one Beyhive member theorized online.

"Tina Turner on her shirt? Yeah, the Rock album is coming," another similar comment read.

"Beyoncé wearing a Tina Turner T-shirt for Texas Hold' Em, and giving us a few [rock hand sign emoji] is really telling us Act III is imminent," a third fan gushed.

While fans can't help but see obvious signs that Beyoncé's ninth studio album will be Rock genre-focused, there has been no confirmation from her camp.

Last month, the singer's mother, Tina Knowles, addressed the conspiracy theories while promoting her best-selling memoir, "Matriarch."

When asked during an appearance on Andy Cohen Live about the upcoming project, she answered, "I have no idea." When host Andy Cohen further pressed, saying, "I feel like you do, but that's cool," Ms. Knowles smiled.

Although Beyoncé ended her London stop on a high note, it didn't start that way. As The Blast reported, during the first show, she experienced an unexpected wardrobe malfunction.

While the icon was performing her hit track "I'm That Girl" in an all-gold outfit, her chaps slipped off her waist when she tried to stomp her feet.

However, Queen B handled the mishap like a pro, remaining unbothered during the music break, before stylishly sliding her hands down to pick them back up.

The smooth recovery had the crowd breaking out in cheers, as a backup singer attended to Beyoncé, fastening her outfit.

Meanwhile, the singer is reportedly working on a memoir, inspired by the success of her mother's.

A source dished on the alleged biography, saying Beyoncé has been drafting it quietly for years now, hoping to tell her truth someday.

"Beyoncé has been private about her personal life, but she documents everything, so has technically been writing one for over a decade now," the insider explained.

The source further noted that the book will explore Jay-Z's alleged infidelity that inspired the album "Lemonade," and that could shake the rapper to the core.