The SNL Lineup You Can't Miss: Who Is The Musical Guest Tonight, December 13, 2025?

The wait is finally over for another new episode of *Saturday Night Live*, and the lineup for this week is a transatlantic affair featuring two of Britain’s most compelling talents. Airing this Saturday, December 13, 2025, the iconic Studio 8H will welcome a first-time host known for his dramatic roles and a beloved musical guest who has just made a triumphant return to the music scene. This episode marks the penultimate show of the year, setting the stage for a massive, star-studded Christmas finale.

Fans eager for fresh comedy and electrifying live music should tune in to see a dynamic pairing that promises an unforgettable night. The buzz is particularly strong for the musical performance, as the artist is set to showcase material from a critically acclaimed new album, while the host steps outside his comfort zone to prove his comedic chops. We’ve broken down everything you need to know about the host, the musical guest, their latest projects, and the must-see finale that follows.

Meet the Stars of the December 13, 2025 Episode

The latest installment of *Saturday Night Live* Season 51 is headlined by a duo of celebrated UK artists, both making waves in their respective industries with significant new projects.

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Host: Josh O’Connor

• Full Name: Joshua Colin O'Connor
• Date of Birth: May 20, 1990
• Place of Birth: Southampton, Hampshire, England
• Occupation: Actor
• Known For: Playing Prince Charles in the Netflix series *The Crown*, for which he won an Emmy Award and a Golden Globe Award. His breakthrough role was in the 2017 film *God's Own Country*.
• SNL Debut: This is Josh O'Connor's first time hosting *Saturday Night Live*.
• Recent Projects (2025): O'Connor has had a busy year, starring in multiple high-profile films including the drama *Rebuilding*, which premiered at the Sundance Film Festival, and the art-heist thriller *The Mastermind*, where he plays an art thief. He is also set to appear in *The History of Sound* and *Wake Up Dead*.
• Key Entities: Prince Charles, *The Crown*, Emmy Award, Golden Globe Award, *God's Own Country*, *Rebuilding*, *The Mastermind*, Sundance Film Festival.

Musical Guest: Lily Allen

• Full Name: Lily Rose Beatrice Cooper (née Allen)
• Date of Birth: May 2, 1985
• Place of Birth: Hammersmith, London, England
• Occupation: Singer-songwriter, Actress
• Known For: Her witty, satirical, and genre-blending pop music, with hits like "Smile," "The Fear," and "Fuck You." She is a multi-time Brit Award and Grammy Award nominee.
• SNL History: This marks Lily Allen’s second appearance as a musical guest, her first being back in 2007.
• Recent Projects (2025): Allen recently released her highly anticipated fifth studio album, *West End Girl*, on October 24, 2025. This album is her first new music in seven years and has been praised for its brutally honest and scathing lyrical content, featuring 14 brand new songs.
• Key Entities: *West End Girl*, "Smile," "The Fear," "Fuck You," Brit Awards, Grammy Awards, *The History of Sound*, BMG Rights Management.

The Immediate Buzz: What to Expect from Josh O’Connor and Lily Allen

The combination of Josh O’Connor and Lily Allen is a fascinating choice for *Saturday Night Live* and speaks to the show’s commitment to featuring talent at the peak of their careers, regardless of their comedic background.

Josh O’Connor’s Comedic Challenge

O’Connor is primarily known for his intense, dramatic, and often emotionally reserved roles, particularly his critically acclaimed portrayal of the young Prince Charles in *The Crown*.

His first turn as an *SNL* host will be a crucial test of his versatility, requiring him to shed the royal gravitas and embrace the show’s chaotic, high-energy sketch comedy.

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The show will likely capitalize on his recent film projects, perhaps with sketches related to his art thief role in *The Mastermind* or a parody of his Sundance drama *Rebuilding*.

Fans are eager to see if he can deliver the same depth of character work in a comedic setting as he does in his more serious films.

Lily Allen’s Triumphant Return to Studio 8H

Lily Allen's return to the *SNL* stage after nearly two decades is a major event for pop and alternative music fans.

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Her latest album, *West End Girl*, released in October 2025, has been lauded as a brutally honest and necessary addition to the modern music scene.

Given the album’s raw and personal themes, Allen is expected to perform tracks that showcase her growth as a songwriter and her signature blend of pop hooks and sharp social commentary.

Potential song choices for the December 13th episode include the album's lead single or other standout tracks that have gained traction since the album's release on BMG.

Looking Ahead: The Massive SNL Christmas Finale on December 20, 2025

While the focus is on this week’s show, the final episode of 2025 is already generating huge headlines, offering a powerhouse conclusion to the first half of Season 51.

The Christmas episode, airing on December 20, 2025, will be hosted by pop sensation and actress Ariana Grande.

Grande’s appearance marks her third time hosting the show, and she is currently promoting her highly anticipated film *Wicked: For Good*.

The Musical Guest Everyone is Talking About

The true showstopper for the finale is the musical guest: the legendary Oscar, Emmy, and Grammy Award winner, Cher.

Cher’s appearance as the musical guest is a historic moment for *Saturday Night Live*. It will be her first time performing on the show since 1987, a gap of nearly 40 years.

This diva-sized pairing of Ariana Grande and Cher promises a high-energy holiday spectacular, potentially featuring cameos, duets, and iconic fashion moments that will dominate the entertainment news cycle.

The excitement surrounding the return of a Hollywood icon like Cher, especially alongside a contemporary powerhouse like Grande, guarantees that the December 20th episode will be one of the most-watched of the season.

Topical Authority: Why This SNL Season is a Must-Watch

The back-to-back booking of major stars like Melissa McCarthy, Josh O’Connor, Lily Allen, Ariana Grande, and Cher demonstrates *Saturday Night Live*'s continued relevance and its ability to secure A-list talent from across the globe.

This season has been a masterclass in topical booking, featuring artists and actors who are currently dominating the cultural conversation.

The show is successfully balancing seasoned veterans (like McCarthy and Cher) with breakout stars (like O'Connor) and artists with fresh, new music (like Allen).

The December 13th episode serves as the perfect bridge—showcasing the dramatic range of Josh O'Connor and the musical maturity of Lily Allen—before the final, explosive holiday spectacle.

For fans of British cinema, sharp pop music, and historical television, this Saturday’s episode is essential viewing. For those who love pure pop spectacle, the December 20th show is already being marked on calendars worldwide.

Tune in this Saturday, December 13, 2025, at 11:30 p.m. EST on NBC and Peacock to catch the next installment of this star-studded Season 51. The unique blend of British drama and pop-punk attitude is set to make this episode a critical highlight.