Lily Allen on Jimmy Fallon turns a simple look into power dressing. On the late-night show guest couch, Lily Allen’s white shirt and black trousers read boardroom meets after-hours. She’s teeing up “West End Girl” and a summer run as “Hedda” in Bath, a busy season.

Lily Allen looks chic in white shirt and black pants on Jimmy Fallon

Have a look at Lily Allen on Jimmy Fallon’s The Tonight Show:

The singer wore an oversized button-up draped cleanly, cuffs neat over rings and a pale manicure. High-waisted, straight-leg pants skim to her ankle, elongating every line. Lily Allen on “The Tonight Show” leans back, smoky liner and blunt bangs framing a sly smile.

On “The Tonight Show” Season 13, Episode 42, which aired on December 10, 2025, the British singer previewed “West End Girl” and

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