Alexander Skarsgard, 'Tarzan'

Holy 8-pack! The first look at actor Alexander Skarsgard as Tarzan was finally released and he surely doesn't disappoint! The hunky actor was pictured soaking wet and shirtless revealing his impressive washboard abs in a promotional poster for his upcoming film "Tarzan." Skarsgard also had to grow his hair long for the film that is set to release on July 1, 2016.

Margot Robbie, 'Tarzan'

Blond beauty Margot Robbie will play the role of Jane Porter in the upcoming 2016 film "Tarzan." For the role, Robbie also had to grow out her normally shorter hair and dye it red to resemble the beloved character from the Disney version of the film released back in 1999.

Chris Hemsworth

A far cry from the action hero he usually plays, Chris Hemsworth slimmed WAY down for his role in the upcoming film “In the Heart of the Sea.” The former "Sexiest Man Alive" looked shockingly gaunt in his recent Instagram snap where he showed off the results of his 500-calorie a day diet for the new movie. "Just tried a new diet/training program called "Lost At Sea". Wouldn't recommend it.. #IntheHeartoftheSea" he captioned the photo.

Milla Jovovich, 'Resident Evil: The Final Chapter'

Milla Jovovich, is that you? The actress completely transformed with the help of a makeup team on the set of her upcoming movie, “Resident Evil: The Final Chapter.” “#Nomakeup JK! thank you to @christinaslashes, @andredinoboy, #federicacastelli and @kerry_skelton_ who worked for over 4 hours at 5 am this morning to create "Old Alice" for our scenes today!” she captioned the photo of the shocking makeup job.

Matthew McConaughey, 'Gold'

Matthew, is that you? Actor Matthew McConaughey looked nearly unrecognizable as he sported balding hair and no facial hair while filming scene for "Gold" in New York City on Oct. 4, 2015. McConaughey plays Kenny Wells, a man that teams up with a geologist to find gold in the uncharted jungles of Indonesia in the upcoming film.

Tilda Swinton, 'Trainwreck'

Tilda, is that you? Swinton lost her trademark bleached locks, fair complexion and androgynous style for her latest movie role in "Trainwreck" which was released on July 17, 2015. Donning heavy makeup and a long blond wig, Swinton was barely recognizable as magazine tyrant "Dianna."

Kevin Bacon

Kevin Bacon, is that you? The actor shared a snap on Instagram of himself looking VERY different that we're used to seeing him. "Greetings from the UK!" he captioned the snap, giving no explanation for his new look. Judging from the trailer behind him, Kevin appears to be on set filming a new role.

Jonah Hill, 'Arms and the Dudes'

Oscar nominated actor Jonah Hill has been rising to the top since his 2007 role in "Super Bad," but it seems his weight is doing the same! The 31-year-old actor showed off his larger frame on the set of "Arms and the Dudes" as he held onto his script and kept hydrated on April 30, 2015 in Burbank, California. It's unclear whether his weight gain is for the movie role or not, but the "21 Jump Street" actor has battled the bulge for years. In 2011, Hill was barely recognizable when he dramatically slimmed down and appeared in the film "Moneyball" alongside Brad Pitt.

Megan Fox, 'Teenage Mutant Ninja Turtles 2'

Do blonds really have more fun? It looks like Megan Fox is trying to figure that out! The dark-haired beauty traded her long brown locks for a curly blond wig on the set of "Teenage Mutant Ninja Turtles 2" on April 28, 2015 in New York City. Rocking oversized black glasses, perhaps her character is attempting to go incognito in the action-comedy film, which is due to hit theatres in 2016.

Jake Gyllenhaal, 'Southpaw'

Jake Gyllenhaal got into insane physical shape for his role as a boxer in the new movie, "Southpaw." The disciplined actor gained a whopping 45 pounds of muscle by working out for SIX hours a day.