These multi-talented celebs have all earnt their place at the top of their art and the awards and adulation have followed. But despite their impressive achievements, stars like Lady Gaga, Maisie Williams and even Tom Hanks often doubt their talent and feel like complete and utter frauds, it’s a feeling that’s described as Imposter Syndrome. Find out which stars have struggled with this issue...

The ‘Game of Thrones’ actress, best known as Arya Stark in the fantasy series, starred in one of the biggest shows in the history of TV, but that hasn’t stopped her from battling imposter syndrome. She said: “I think even being an actress for over a decade now, I still have imposter syndrome. Where you're asking yourself, 'Oh, is this really what I'm supposed to be doing?’”

Natalie Portman danced her way to a Best Actress Oscar at the 2011 awards for her portrayal of a schizophrenic ballerina in the psychological thriller ‘Black Swan’. But despite being honored with the highest accolade an actress can earn in Hollywood, Portman has never felt good enough. Reflecting on her time at Harvard at the Harvard event in 2015, Natalie said: “Today I feel much like I did when I came to Harvard Yard as a freshman in 1999. “I felt like there had been some mistake, that I wasn’t smart enough to be in this company, and that every time I opened my mouth I would have to prove that I wasn’t just a dumb actress.”

She’s known as the ‘Spanish Enchantress’ outside her native county, but the Academy Award winner doesn’t see herself in the same light. Cruz always fears she will get fired every time she starts a new project as she doesn’t think she’s good enough. She said: “I feel every time I’m making a movie, I feel like if it was my first movie. “Every time I have the same fear that I’m gonna be fired. And I’m not joking. Every movie, the first week, I always feel that they could fire me!”

The pop icon has to pinch herself every day to remember she’s not dreaming and she’s in fact a global pop superstar, and also now an acclaimed actress. Gaga said: "I still sometimes feel like a loser kid in high school and I just have to pick myself up and tell myself that I'm a superstar every morning so that I can get through this day and be for my fans what they need for me to be.”

Despite being more than a quadruple threat, the actress, comedian, writer, producer and playwright feels like a complete and utter fraud! She said: "The beauty of the impostor syndrome is you vacillate between extreme egomania, and a complete feeling of, 'I'm a fraud! Oh god, they're on to me! I'm a fraud!'

With a career that has spanned five decades and a filmography that includes 'Scarface', 'The Witches of Eastwick', 'Batman Returns' and 'Ant-Man and the Wasp' and many more, you'd think Michelle Pfeiffer would be secure about her acting talents. But Michelle was plagued with self-doubt, especially when she started out. Pfeiffer, now 64, said: "I think it comes from not having a background of formal training, you know, in the beginning. “And I think when I started out, a lot of actors were coming out of Juilliard and I was just this young person from Orange County, kind of just getting by on my instincts purely and I think, for the longest time, I felt like it wasn’t really enough and maybe didn’t give me the credibility and maybe because I had to find my technique as I went along. That I didn’t sort of start from a real secure place.”

Ellie’s hit songs like ‘Lights’, ‘Love Me Like You Do’ and ‘Burn’ have earned her global chart success, but imposter syndrome almost led Ellie to sabotage her entire career. She said: “I know I chose this job but nothing could have prepared me for the ups and downs that come with it. “I know for sure that a lot of my anxiety has come from what they call ‘imposter syndrome’, not believing in myself enough and thinking that I don’t deserve happiness, which results in wanting to sabotage my own success.”

Lifestyle blogger Zoe Sugg, better known by her YouTube moniker Zoella, has racked up more than 10 million subscribers on her channel. But the self-made millionaire had doubts over everything she achieved. She said: “I have major imposter syndrome at the moment! “I’m constantly doubting everything I’ve achieved, everything I’m working on business wise and everything I’m working on in my personal life! “It’s such a peculiar feeling and nothing I do seems to make it ‘less so’.”

The former First Lady didn’t always feel she was deserving of her career as a lawyer and later as a prominent charity campaigner and women of influence. Michelle - who is married to history making former President, Barack Obama - said: "I had to overcome the question ‘am I good enough?’. “It’s dogged me for most of my life. Many women and young girls walk around with that question in their minds. “I overcame that question the same way I do everything – with hard work. "I decided to put my head down and let my work speak for itself. I felt like I had something to prove because of the colour of my skin and the shape of my body, but I had to get out of my own way. “It never goes away. “It’s sort of like ‘you’re actually listening to me?’ It doesn’t go away, that feeling of ‘I don’t know if the world should take me seriously; I’m just Michelle Robinson, that little girl on the south side who went to public school’.”

Two-time Best Actor Oscar winner Tom Hanks has surprisingly also experienced self-doubt, despite being one of the most successful Hollywood stars in history. Speaking about his own experience of imposter syndrome, he said: "No matter what we've done, there comes a point where you think, 'How did I get here? When are they going to discover that I am, in fact, a fraud and take everything away from me?' "