Teddie Allen Shines at Young Sherlock Premiere

's sister Teddie, 19, enjoyed her red carpet moment at the world premiere of 's Young .

The 19-year-old actress is the daughter of actors Keith Allen and Tamzin Malleson and the half-sister of Lily and Alfie Allen.

She recently starred alongside  as his teenage daughter in Guy Ritchie-directed MobLand and has been making her way onto red carpets over the last year.

Stepping out on Tuesday, Teddie made an appearance at the World Premiere of Prime Video's Young Sherlock, held at Queen Elizabeth Hall in London. 

Teddie looked strikingly similar to her older sister as she graced the red carpet with her naturally-styled black locks.

She also echoed Lily's former style from the mid-noughties in a black corseted midi-dress.

Teddie is the daughter of actors and Tamzin Malleson.

Her half-sister Lily, 38, is a world famous singer and actress and has received , BRIT Award and Olivier Award nominations over her career.

Meanwhile her half-brother Alfie, 37, is an actor, most famed for starring as Theon Greyjoy on all eight seasons of hit series , as well as and JoJo Rabbit.

He welcomed Lily and Alfie with his first wife Alison Owen before his relationship with current partner Tamzin, 49, who gave birth to Teddie in 2006.

Teddie recently spoke to The Sunday Times alongside her father, where she revealed what it is like to have celebrities in the family.

She explained it had been 'weird' when she was younger, with people asking her dad for photos and other children at school quizzing her on her relation to Lily.

Teddie added that an added negative was when she would search up her family on the internet and would see cruel comments about her from online trolls.

However, she said that she enjoyed going to see Lily and swimming in her pool and recalled meeting celebrities like Nick Grimshaw and Happy Mondays' Shaun Ryder.

She explained: 'When I was at junior school, older girls started asking me if my mum and dad were on telly or if Lily Allen was my sister. That feels a bit weird when you're little. 

'And when we were out shopping people would run up to my dad and call him "a legend" or "a hellraiser". If they wanted a selfie it was usually me that ended up taking it. 

'I wanted to say, "You might think he's a legend and a hellraiser, but did you know that he calls me into the living room to get the TV remote from the coffee table because he's too lazy to get off the armchair?"'

She added: 'As I got older it all started to make sense. I'd see pictures of him with Alex James from Blur or Jennifer Saunders, Neneh Cherry. There's a picture of me in the kitchen with Shaun Ryder from the Happy Mondays.

'Then there's Alfie and Lily. I used to love going to Lily's house because she had a swimming pool - Nick Grimshaw was there one day and taught me how to dive. 

'Foolishly, when I was about 11, I started googling my family and wish I hadn't. There was even some horrible stuff about me, saying how awful my name was. I didn't know these people, so what's it got to do with them?'

Teddie quickly began to follow in her famous family members' footsteps, starring in the 2016 BBC adaptation of Swallows and Amazons at just ten years old, as well as roles in Cider with Rosie and Four Kids and It. 

However, she said that despite her famous connections, she has not benefitted from being a 'nepo baby'. 

Teddie explained that Keith had refused to pay for her to have acting classes or help her get parts.

She said: 'When I told him I was interested in acting, he said there was no way he was paying for some fancy acting college or hustling for work for his daughter. At the time I was a bit put out, but now I see he was right.'

Explaining his view, Keith said: 'Teddie seems to be drifting towards acting but I can promise you that she has never been pushed or encouraged by me or Tamzin. 

'None of this nepotism s**t. If she wants to do it, she can do it herself. I didn't have anybody helping me.'

He continued: 'She seems quite wary of stepping into the public eye, or whatever you want to call it, because she's seen that it doesn't always have a positive outcome.  That's the best way to approach it. All these people that are so desperate to be famous: f*** off.'

He added: 'If Teddie ends up in Hollywood and she's happy, great. If it means I don't have to work, even better.'