Kristen Johnston is driving audiences and critics wild with her performance in  Netflix’s new sitcom Leanne. With her razor-sharp timing, bold delivery, and unapologetic charisma, Johnston has turned every one of her scenes into a highlight that viewers can’t stop talking about. Fans are calling her the breakout force of a show already filled with warmth and laughs, and some critics have gone further, dubbing her the “sitcom queen” of 2025. For an actress who has been a consistent presence on television for decades, this moment feels like a turning point—one where she has not only reaffirmed her comedic power but also redefined her place in the sitcom world.

At the center of Leanne is stand-up comedian Leanne Morgan, making her scripted television debut under the guidance of sitcom heavyweight Chuck Lorre. The show, inspired by Morgan’s own humor and life experiences, follows a woman navigating the painful end of a 33-year marriage and rediscovering herself along the way. It’s funny, heartfelt, and steeped in Southern charm. But as compelling as Leanne’s story is, it’s her sister Carol, played by Kristen Johnston, who keeps stealing the show.

Carol is the family’s black sheep, a woman with two divorces under her belt, a brash attitude, and a preference for the bar over Sunday service. In many ways, she is the antithesis of Leanne’s traditional Southern belle lifestyle. Where Leanne is measured, Carol is messy; where Leanne is restrained, Carol is unfiltered. That contrast provides both a narrative spark and a comedic goldmine. Johnston plays Carol with such exuberance that her presence feels like a release valve—whenever the story edges too close to heartbreak or family tension, Carol storms in with sarcasm, empathy, or chaotic energy that lifts the entire scene.

The brilliance of Johnston’s performance lies in her ability to layer vulnerability beneath the rowdiness. Yes, Carol is loud, blunt, and unpredictable, but she is also deeply relatable as a woman who feels underappreciated and overlooked by her family. Her storyline resonates with anyone who has ever struggled to be seen or accepted, making her more than just comic relief. Johnston’s nuanced performance allows Carol to swing from laugh-out-loud absurdity—like donning a ventilator to mimic Leanne’s ex-husband in bed—to genuinely touching moments of sisterly support. That duality is why audiences are falling in love with her all over again.

The chemistry between Johnston and Morgan is another cornerstone of the show’s success. Together, they embody the messiness and loyalty of sisterhood—bickering one minute and supporting each other unconditionally the next. Watching the roles reverse, with the “responsible” older sister Leanne leaning on her “reckless” younger sister Carol, adds an unexpected emotional depth to the comedy. Their dynamic becomes the heart of the series, showcasing Johnston not only as a scene-stealer but also as a vital emotional anchor.

Johnston’s character arc in Leanne is one of the season’s most compelling. While Leanne’s journey is largely linear—focusing on moving forward after divorce—Carol’s path is messier, filled with progress, setbacks, and hilariously complicated detours. One moment she’s opening up to her sister’s proclamations of love, the next she’s storming out over being given pennies instead of heirlooms. Even her romance storyline, where she falls for a seemingly perfect man who turns out to be wanted by the FBI, showcases Johnston’s range. She takes Carol from heartbroken to hopeful, from bitter to unexpectedly tender, crafting a character arc that feels lived-in and authentic.

By the time Carol finally accepts that she is loved by her family, Johnston has given audiences a masterclass in balancing humor and pathos. The revelation is simple yet profound: the rowdiest, most unapologetic character is also the one most in need of acceptance. It’s a moment that resonates precisely because Johnston has made us laugh so hard before letting us glimpse the fragility underneath.

This success is more than just another notch in Johnston’s long career. While she has already made her mark in sitcom history with 3rd Rock from the Sun and Mom, her turn in Leanne is being hailed as career-defining. The energy she brings to Carol feels like the culmination of years of honing her craft, a performance that not only delights but also dominates. With audiences and critics united in their praise, it’s no wonder she is being hailed as the “sitcom queen” of the moment.

But what excites me most is what comes next. Behind the scenes, Johnston is said to be quietly preparing for her next role, one that could take her even further beyond the realm of traditional sitcoms. If Leanne is proof that she can carry a show’s emotional and comedic weight simultaneously, her next project may be the one that cements her as one of the most versatile and enduring performers of her generation. The buzz suggests she’s ready to tackle something riskier, perhaps blending her comedic instincts with dramatic heft in a way that could surprise even longtime fans.

For now, though, Leanne belongs to her. Kristen Johnston has transformed a supporting role into the centerpiece of a  Netflix hit, reminding audiences why sitcoms endure: because at their best, they make us laugh while showing us something real. Johnston has managed both with effortless flair, and as viewers binge the show, they’ll find themselves waiting eagerly for her every appearance. If 2025 is already being called her year, it’s because Johnston has turned a good sitcom into something unforgettable—and she’s only just getting started.