Former Frasier star Jane Leeves was joined by lookalike daughter Isabella Coben on Sunday evening, almost two decades after her pregnancy with the now seventeen-year old was used to great effect on the hugely popular sitcom.

Mother and daughter were side by side at the premiere of new Showtime series Patrick Melrose, and their striking similarity was undeniable as they posed for photos after arriving at the Linwood Dunn Theater in Los Angeles.

Jane, 57 - best known for her breakout role as hapless Mancunian housekeeper Daphne Moon - looked casual in a black blouse and matching skinny jeans teamed with leopard print stiletto heels.

Side by side: Former Frasier star Jane Leeves was joined by lookalike daughter Isabella Coben on Sunday evening, almost two decades after her pregnancy with the now seventeen-year old was used to great effect on the hugely popular sitcom

Meanwhile Isabella - the oldest of her two children with CBS Paramount Television executive Marshall Coben - sported a tasteful spotted shirt dress and strappy heels.

Jane fell pregnant with her daughter while preparing for the eighth season of Frasier, leaving writers with a conundrum in terms of how to explain the actress's inevitable weight gain.

Taking advantage of previous quips about Daphne's weight, they decided to incorporate Jane's pregnancy as excessive weight gain brought on by the character's extreme over-eating.

Previously: Jane fell pregnant with her daughter while preparing for the eighth season of Frasier, leaving writers with a conundrum in terms of how to explain the actress's inevitable weight gain

Fans with sharp memories will remember the character eventually checked into a weight loss spa by way of explaining Leeves' absence from the Seattle based show while giving birth to Isabella.

Daphne later returned having lost '9 pounds and 12 ounces' - the exact baby weight of her off-screen daughter.

Speaking to The Telegraph in 2004, 12-months after the birth of son Finn, Leeves ruled out the possibility of having more children, citing the impact it had on her physical appearance as a major reason.

Striking: Mother and daughter were side by side at the premiere of new Showtime series Patrick Melrose, and their striking similarity was undeniable as they posed for photos after arriving at the Linwood Dunn Theater in Los Angeles

Easily explained: Taking advantage of previous quips about Daphne's weight, writers decided to incorporate Jane's pregnancy as excessive weight gain brought on by her character's extreme over-eating on Frasier (pictured in 2000)

'When you get pregnant everything spreads,' she said. 'Your pelvis separates. You get gaps between your teeth. I went up a shoe size with each of my kids. My feet just grew. But no one tells you that, do they?

'My hips and teeth went back together again, thank God, but look at this.'' She lifts a booted foot into the air. It is not small. Dainty it ain'ty.

'So I can't have any more children, or I'll never be able to buy another pair of shoes again.'

Weight gain: Fans with sharp memories will remember the character eventually checked into a weight loss spa by way of explaining Leeves' absence from the Seattle based show while giving birth to Isabella