Buzz·Posted on Dec 19, 20148 Child Stars' Remarkable TransformationsPrepare to feel incredibly old.by Daniel KibblesmithBuzzFeed StaffLinkFacebookPinterestTwitterMail 1. Haley Joel Osment Getty Images Dan Callister / Dimitrios Kambouris We had a sense that he'd grow up handsome. Getty Images Dan Callister / Dimitrios Kambouris We had a sense that he'd grow up handsome. ← Slide → Getty Images Dan Callister / Dimitrios Kambouris We had a sense that he'd grow up handsome. 2. Frankie Muniz Getty Images Brenda Chase / Kevin Winter Like a boss. Getty Images Brenda Chase / Kevin Winter Like a boss. ← Slide → Getty Images Brenda Chase / Kevin Winter Like a boss. 3. Daniel Radcliffe AFP / Getty Images TIMOTHY A. CLARY / NICOLAS ASFOURI The Harry Potter star went through a truly magical transformation. AFP / Getty Images TIMOTHY A. CLARY / NICOLAS ASFOURI The Harry Potter star went through a truly magical transformation. ← Slide → AFP / Getty Images TIMOTHY A. CLARY / NICOLAS ASFOURI The Harry Potter star went through a truly magical transformation. 4. Mary Kate & Ashley Olsen Getty Images The Full House duo went from from twin cuties to twin beauties right before our eyes. Getty Images The Full House duo went from from twin cuties to twin beauties right before our eyes. ← Slide → Getty Images The Full House duo went from from twin cuties to twin beauties right before our eyes. 5. Michelle Trachtenberg Getty Images Jason Kirk / iStockphoto MariaArefyeva She could spy on us any time. Getty Images Jason Kirk / iStockphoto MariaArefyeva She could spy on us any time. ← Slide → Getty Images Jason Kirk / iStockphoto MariaArefyeva She could spy on us any time. 6. Justin Timberlake Scott Gries / Stockbyte / Via Getty Images / ThinkStock Definitive proof that Justin Timberlake has always in *NSYNC with style. Scott Gries / Stockbyte / Via Getty Images / ThinkStock Definitive proof that Justin Timberlake has always in *NSYNC with style. ← Slide → Scott Gries / Stockbyte / Via Getty Images / ThinkStock Definitive proof that Justin Timberlake has always in *NSYNC with style. 7. Elijah Wood Getty Images Diane Freed / iStockphoto Boarding1Now / AFP / Getty Images HUGO PHILPOTT We'd keep a seat empty for Elijah. Rowr. Getty Images Diane Freed / iStockphoto Boarding1Now / AFP / Getty Images HUGO PHILPOTT We'd keep a seat empty for Elijah. Rowr. ← Slide → Getty Images Diane Freed / iStockphoto Boarding1Now / AFP / Getty Images HUGO PHILPOTT We'd keep a seat empty for Elijah. Rowr. 8. Aaron Paul Getty Images Vince Bucci / Getty Images/iStockphoto JOHN GOMEZ Breaking gorgeous. Getty Images Vince Bucci / Getty Images/iStockphoto JOHN GOMEZ Breaking gorgeous. ← Slide → Getty Images Vince Bucci / Getty Images/iStockphoto JOHN GOMEZ Breaking gorgeous.