5. MARGOT ROBBIE - 27 YEARS OLD
Margot Robbie made the decision to become an actress when she was just 17 years old and even moved from her home in Melbourne to live with a friend across the country so that she could actively pursue it. Robbie made her first appearance on TV screens in Australian TV drama Neighbours as Donna Freedman, a character that she portrayed for almost three years before, according to The Daily Star, she announced that she was moving to Los Angeles to give herself the opportunity to land much bigger acting jobs in Hollywood.
Robbie's role alongside Leonardo DiCaprio in The Wolf of Wall Street and as Harley Quinn in 2016 blockbuster Suicide Squad definitely put her on the map and have made her one of the best known female actresses in Hollywood currently. Robbie was recently seen portraying Daphne de Sélincourt who was the mother of main character Billy Moon in the movie Goodbye Christopher Robin and even Tonya Harding in I, Tonya, which should have allowed her to come off as a much older actress but instead Robbie still manages to remain a youthful presence in every role she portrays. This could be why fans find it so hard to accept that she will be 28 years old this summer.
4. CAREY MULLIGAN - 32 YEARS OLD
Carey Mulligan is now a mother of two and someone who has been around the acting business for almost 15 years. The actress started her career when she was just 19 years old as part of The Royal Court Theatre in London before she landed the role of Kitty Bennet in Pride and Prejudice.
This role has since opened the doors for Mulligan's career in movies to begin and the actress has starred in a number of high profile films, including The Great Gatsby and Suffragette in recent years. Mulligan has been pushed in amongst the argument for equal pay in Hollywood over the past few months since she has been quite outspoken on the topic and even told USA Today, "I'm always hyper-aware that my job is a joy to me and something that I'm paid an awful lot of money to do for something that I love. I'm not a doctor or a nurse, I'm an actress." Mulligan is another actress who has been able to land roles based on her youthful appearance over the past decade and at 32 years old, she is someone who definitely needs to share her skincare regime with the rest of the world.
3. TROIAN BELLISARIO - 32 YEARS OLD
Troian Bellisario has been working in the acting business ever since she was three years old. The star first appeared in the role of Justin's daughter in 1888 film Last Rites, which later allowed her to move on to a number of guest roles on some of the most high profile shows of the 1990s.
It wasn't until November 2009, when Bellisario was already 24 years old, that she was cast as high school student Spencer Hastings in teen drama Pretty Little Liars. Over the past decade, Bellisario has become most recognizable in this role as the series has become quite popular with the teen demographic. The show ended in 2017 and Troian has been able to move on to other TV and film roles since then, but because the actress is most associated with the youngest Hastings child, many fans find it hard to believe that the star is actually 32 years old. It was reported by Teen Vogue that while still being part of Pretty Little Liars, Troian was able to try her hand at directing some of the episodes, which was a successful experiment that all of her co-stars supported and a future career path that the actress could pursue.
2. ABIGAIL BRESLIN - 21 YEARS OLD
Abigail Breslin appeared in her first TV commercial when she was just three years old, before moving on to her first role in a film when she was just five. Breslin has been seen as a child or a teenager for more than a decade now, which is why it's so hard to believe that she's finally turned 21.
Roles in Little Miss Sunshine, Nim's Island, My Sister Keeper and Definitely, Maybe put the star on the map, but they also gave the impression that she was much younger than she actually was, since many of her roles in recent years have been as the daughter or older sister of the main stars in the movie. Insider reports that Breslin became the youngest nominee for an Oscar in history when she was added to the card for her role in Little Miss Sunshine was she was just 11 years old and over the past decade, she has continued to push her career forward with much more serious roles. Breslin hasn't been as active in recent years as it appears that the star has dropped her workload somewhat but now she's finally considered to be an adult she can audition for much grittier roles.
1. JULIANNE HOUGH - 29 YEARS OLD
Julianne Hough is a dancer, singer, and actress but is perhaps better known for her acting career, despite being a two-time Champion on Dancing With The Stars. Hough started her acting career when she was 13 years old as an extra in Harry Potter and The Philosophers Stone, before taking a break from the business until 2010 when she starred in Burlesque alongside Cher and Christina Aguilera.
Hough later appeared in the remake of Footloose in 2011 and Safe Haven, which is the adaptation of the book by the same name by Nicholas Sparks. Hough's brother Derrick is also a dancer and the duo faced off a number of times on Dancing With The Stars and most recently on Lip Sync Battle. Hough's physical appearance is one of the reasons she has been able to make this list. It seems that her physical lifestyle and obsession with exercise has allowed her to maintain much younger looks, which is why she was able to portray a high school student in Footloose when she was 23 years old. Hough turns 30 in the summer and can still easily pass for a teenager. The actress even admitted in an interview with People that she looked older when she was 18 than she does right now.