When the cast of a beloved movie or TV series reunites years after the credits stop rolling, time stands still for a moment, and fans can’t help but get a little emotional.

The old castmates of Lord of the Rings recently had dinner together 15 years after the release of their first film together, and their group selfies made Instagram users lose their absolute minds. In 2014, the cast of Mean Girls broke the Internet with a photoshoot to mark the 10th anniversary of their legendary drama. Whether these monumental meet-ups make your heart skip a beat, or make you feel ancient enough to be somebody’s great-grandparent, they’re a fascinating look at how the stars change over time. We’re looking at you, Lindsay Lohan.

Have a scroll through some of our favourite celeb reunions below, and try to figure out who’s older – you, or them.

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41 Famous Cast Reunions That Will Make You Feel Old

#1 Lord Of The Rings: 2001 Vs. 2017

#2 About Thelma & Louise: 1991 Vs. 2014

#3 Forrest Gump: 1994 Vs. 2014

#4 Married With Children 1987 Vs. 2014

#5 That ’70s Show: 1998 Vs. 2013

#6 Friends: 1994 Vs. 2004 Vs. 2016

#7 Pretty Woman: 1990 Vs. 2016

#8 Back To The Future: 1990 Vs. 2016

#9 School Of Rock: 2003 Vs. 2013

#10 Star Wars: 1980 Vs. 2013

#11 The Nanny: 1993 Vs. 2016

#12 Ghostbusters: 1984 Vs. 2016

#13 Harry Potter: 2002 Vs. 2014/2015

#14 E.T.,The Extra-Terrestrial: 1982 Vs. 2012

#15 Matilda: 1996 Vs. 2013

#16 The X-Files: 1993 Vs. 2015

#17 Titanic: 1997 Vs. 2017

#18 The Little Rascals: 1994 Vs. 2014

#19 The Wonder Years: 1988 Vs. 2014

#20 Star Trek: The Next Generation 1987 Vs. 2012

#21 The Sisterhood Of The Traveling Pants: 2005 Vs. 2013

#22 The Nanny: 1993 Vs. 2004

#23 Lost: 2004 Vs. 2014

#24 Lizzie Mcguire: 2001 Vs. 2015

#25 Aliens: 1986 Vs. 2014

#26 Full House: 1990 Vs. 2016

#27 Ugly Betty: 2006 Vs. 2016

#28 The Goonies: 1985 Vs. 2015

#29 Terminator 2: Judgment Day: 1991 Vs. After A Decade

#30 Buffy The Vampire Slayer: 1997 Vs. 2014

#31 10 Things I Hate About You: 1999 Vs 2014

#32 The West Wing: 1999 Vs. 2015

#33 Dawson’s Creek: 1998 Vs. 2014

#34 The Sandlot: 1993 Vs. 2013

#35 High School Musical: 2006 Vs. 2016

#36 iCarly: 2010 Vs. 2016

#37 Boy Meets World: 1993 Vs. 2013

#38 One Tree Hill: 2003 Vs. 2015

#39 Laguna Beach: 2004 Vs. 2014

#40 Hey Dude: 1989 Vs. 2014

#41 Friday Night Lights: 2006 Vs. 2016