Biwi No.1 is a quintessential David Dhawan masala entertainer that perfectly captures the late 90s Bollywood aesthetic. The film relies heavily on its vibrant energy, slapstick humor, and the charisma of its ensemble cast. The first half moves at a brisk pace, establishing the extramarital conflict with a mix of lightheartedness and drama. The screenplay is designed to keep the audience engaged through situational comedy rather than deep emotional resonance.

The second half shifts into a 'battle of the wives' scenario, which provides the bulk of the entertainment. While the plot is predictable and the gender politics are dated by modern standards, the execution remains effective for a commercial potboiler. The pacing is consistent, though some scenes feel stretched to accommodate the large cast. The film's ability to balance family drama with loud comedy was a major factor in its theatrical success.

Music by Anu Malik is one of the film's strongest pillars. Tracks like 'Chunari Chunari', 'Ishq Sona Hai', and 'Biwi No.1' were massive chartbusters that significantly boosted the film's opening and repeat value. The background score is typical of 90s comedies—loud and punctuating every joke—but it fits the over-the-top directorial style of David Dhawan.

Overall, the film succeeds as a commercial package. It doesn't strive for realism but focuses on providing a colorful, musical, and humorous experience. The chemistry between Salman Khan and Karisma Kapoor, contrasted with the sophisticated presence of Sushmita Sen, creates a dynamic that drives the narrative forward effectively.

Karisma Kapoor: Delivers a powerhouse performance, transitioning seamlessly from a traditional housewife to a modern woman. Her comic timing and emotional range are the highlights of the film.

Salman Khan: Plays the flawed protagonist with ease. His charm makes a somewhat unlikable character palatable to the audience.

Sushmita Sen: Stunning and graceful as Rupali. She brought a level of sophistication to the role of the 'other woman' and won several awards for her performance.

Anil Kapoor: As Lakhan, he provides excellent comic relief. His 'Hain' catchphrase and chemistry with Salman Khan are memorable.

Tabu: In a special appearance as Lakhan's wife, she adds grace and humor to the supporting cast.