Here's where they've been -- and what to watch for.
Elle Fanning, 16: Proved a keeper as Aurora, "Maleficent's" rarely sleeping beauty opposite Angelina Jolie
Looking forward to her as Frankenstein's real creator, British novelist Mary Shelley
— TORU YAMANAKA / AFP/Getty Images, June 24, 2014
Chloe Grace Moretz, 17: Hit our radar as Joseph Gordon-Levitt's helpful half-sister in "(500) Days of Summer"
Looking forward to her being saved by Denzel Washington in Antoine Fuqua's "The Equalizer".
— NINA PROMMER / EPA, June 26, 2014
Hailee Steinfeld, 17: Hit our radar as the insistent young woman intent on finding her father's killer in the Coen brothers' "True Grit"
Looking forward to the Civil War saga of Southern women defending the homefront in "The Keeping Room" — Carolyn Cole / Los Angeles Times, Feb. 7, 2014
Hailee Steinfeld, 17: Proved a keeper as Ellis, a young southern romantic helping Matthew McConaughey's fugitive in "Mud" (pictured)
Looking forward to him in "The Forger," a multigenerational family crime drama with Christopher Plummer and John Travolta
— HANDOUT, May 9, 2012
Saoirse Ronan, 20: Hit our radar as the young Briony whose act sparks a lifetime of "Atonement" for Keira Knightley
Looking forward to her as a young Irish immigrant making her way in the 1950s in "Brooklyn" — Dennis Van Tine / MCT, March 28, 2013
Ansel Elgort, 20: Proved a keeper as Gus, half of the romantic couple in "The Fault in Our Stars" with Shailene Woodley
Looking forward to him in Jason Reitman's sexual frustration comedy, "Men, Women & Children". — Pierre Suu / Getty Images, June 25, 2014
Ezra Miller, 21: Proved a keeper as the teenage psychopath in "We Need to Talk About Kevin"
Looking forward to seeing him seduce Emma in "Madame Bovary" opposite Mia Wasikowska — Nicole Rivelli / Oscilloscope Laboratories, Sept. 19, 2011
John Boyega, 22: Hit the radar as a teen gangster dealing with a space invader in the horror/comedy "Attack the Block"
Looking forward to his turn as the new hero in the "Star Wars" galaxy, Episode VII if you're counting.
— Mike Windle / Getty Images for McDonalds's, Jan. 19, 2014
Shailene Woodley, 22: Proved a keeper as George Clooney's character's cynical teen daughter in "The Descendants"
Looking forward to her finishing off the rest of Tris' "Divergent" journey. — Andrew A. Nelles / Chicago Tribune, March 4, 2014
Jennifer Lawrence, 23: Hit our radar as the Ozark Mountain teen defiantly searching for her dad in "Winter's Bone"
Looking forward to "Serena," a Depression-era drama from filmmaker Susanne Bier that once again pairs her with Cooper. — Pascal Le Segretain / Getty Images, July 7, 2014
Dev Patel, 24: Hit the radar playing a Mumbai teen and game show winner strung up for his knowledge in Danny Boyle's "Slumdog Millionaire"
Looking forward to his highly intelligent real robot in Neill Bromkamp's coming action thriller "Chappie" — Ricardo DeAratanha / Los Angeles Times, July 31, 2012
Emma Watson, 24: Hit the radar as the young female wizard Hermione Granger in "Harry Potter and the Sorcerer's Stone"
Looking forward to her distraught daughter in director Alejandro Amenábar's thriller "Regression"
— Pascal Le Segretain / Getty Images, July 9, 2014
Emma Watson, 24: Hit the radar in "Panic Room" as Jodie Foster's character's daughter having to do or die after a home invasion
Looking forward to her role as an assistant to Juliette Binoche's middle-aged actress in Olivier Assayas' "Clouds of Sils Maria" in December
— Pascal Le Segretain / Getty Images, July 8, 2014
Nicholas Hoult, 24: Hit the radar as the persistent kid prodding Hugh Grant's character toward responsibility in "About a Boy"
Looking forward to him in the post-apocalyptic reboot, "Mad Max: Fury Road," with Charlize Theron and Tom Hardy
— HO / REUTERS, May 15, 2002
Alden Ehrenreich (left), 24: Hit the radar as an aspiring writer in Southern Gothic witch-teen-romance "Beautiful Creatures"
Looking forward to him in the still-untitled Warren Beatty Howard Hughes drama
— John Bramley / HANDOUT, June 25, 2012
Mia Wasikowska, 24: Proved a keeper as a passionate Jane in Cary Fukunaga's "Jane Eyre" (pictured)
Looking forward to her turn in another classic role, Emma in "Madame Bovary" opposite Ezra Miller — Laurie Sparham / McClatchy-Tribune, March 22, 2010
Brie Larson , 24: Proved a keeper as a residential treatment worker with her own abuse issues in "Short Term 12"
Looking forward to her in the crime thriller "The Gambler" opposite Mark Wahlberg
— Andrew H. Walker / Getty Images, June 25, 2014
Anton Yelchin, 25: Hit the radar as Chekov in new-generation "Star Trek" along with Chris Pine and Zachary Quinto
Looking forward to watching him lose his mind in Paul Schrader's new spy thriller "The Dying of the Light"
— Industrial Light a / Industrial Light & Magic, May 6, 2009
Elizabeth Olsen , 25: Hit the radar as the mentally fractured young woman in "Martha Marcy May Marlene"
Looking forward to seeing her as the Scarlet Witch in the next "Avengers" — Theo Wargo / Getty Images, Sept. 29, 2013
Emma Stone, 25: Hit the radar with her good girl pretending to be bad in teen comedy "Easy A"
Looking forward to her star turn in Woody Allen's latest comedy-drama "Magic in the Moonlight" opposite Colin Firth this month
— Dimitrios Kambouris / Getty Images, July 17, 2014
Dayo Okeniyi, 26: Hit my radar as the strong silent Thresh on "The Hunger Games," protector of Rue, one of the many to fall.
Looking forward to seeing him next in "Terminator: Genesis," possibly pivotal as the son of cyber scientist Dr. Miles Dyson
— Kevin Winter / Getty Images, Feb. 5, 2014
Dane DeHaan, 27: Proved a keeper as Beat Generation's Lucien Carr, the troubled one everyone loved, in "Kill Your Darlings"
Looking forward to seeing his take on James Dean in the drama "Life" with Robert Pattinson — Dimitrios Kambouris / Getty Images, July 17, 2014
Michael B. Jordan , 27: Proved a keeper as the young African American man gunned down at a Berkeley metro stop in "Fruitvale Station"
Looking forward to seeing him play boxer Apollo Creed's grandson and reteamed with "Fruitvale" filmmaker Ryan Coogler in "Creed" — Wally Skalij / Los Angeles Times, March 2, 2014
Ellen Page, 27: Hit the radar for her fast patter as the quirky smart pregnant teen in "Juno"
Looking forward to her as a car mechanic helping her girlfriend, Julianne Moore's police detective, fight for pension benefits in the coming "Freeheld"
— Kevork Djansezian / Getty Images for MTV, April 13, 2014
Robert Pattinson, 28: Hit the radar as the swoony vampire in "Twilight"
Looking forward to him as T.E. Lawrence in Werner Herzog's "Queen of the Desert" — Pascal Le Segretain / Getty Images, May 19, 2014
Amanda Seyfried, 28: Proved a keeper after her singing Sophia in "Mama Mia!" with Meryl Streep
Looking forward to her star turn in Joe Wright's "Pan" along with Rooney Mara, Hugh Jackman and Garrett Hudlund — Anne Cusack / Los Angeles Times, April 18, 2010
Anna Kendrick, 28: Hit the radar as the tart efficiency expert brought in to work with George Clooney's firing specialist in "Up in the Air"
Looking forward to her Cinderella with a witchy Meryl Streep in "Into the Woods" in December
— Jason Merritt / Getty Images, Jan. 26, 2014
Carey Mulligan, 29: Hit the radar as a suburban British teen coming of age with the help of Peter Sarsgaards' playboy in "An Education"
Looking forward to her as the seductress in "Far From the Madding Crowd" with Juno Temple and Michael Sheen — John Shearer / Getty Images for Hollywood Film, April 21, 2012
Rooney Mara, 29: Hit the radar as Lisbeth Salander in David Fincher's English-language version of "The Girl with the Dragon Tattoo"
Looking forward to "Carol," as a young woman falling for an elegant Cate Blanchett in Todd Hayes' 1950s-era drama — Andrew H. Walker / Getty Images, Aug. 13, 2013
Garrett Hedlund, 29: Hit the radar as a country singer-songwriter scrapping by in "Country Strong"
Looking forward to his Capt. Hook in Joe Wright's "Pan"
— HANDOUT, Jan. 3, 2011
