There’s nowhere harder than Hollywood to guess people’s ages. For celebrities, it’s their business to age gracefully — to the point that that we can’t tell who’s a senior in high school and who gets the Early Bird Special. Try your hand at guessing which member of the following celebrity pairs is older!

1. Courtney Stodden’s married to a 51-year-old man, and Selena Gomez is dating 17-year-old Justin Bieber. You’d think Selena would be younger, but she’s actually 19 to Courtney’s 17.
(Photo credit: Pacific Coast News; Macca & Todd G/Splash News)

2. Gossip Girls Chace Crawford and Spiderman’s Andrew Garfield both look young to us. They still manage to pass for high schoolers in movies, but Andrew’s 28 and Chace is 26.
(Photo credit: Matt Carr/Getty Images; Jason Merritt/Getty Images)

3. Glee’s Lea Michele and Rihanna haven’t been in the spotlight that long, but their distinct senses of style and red carpet confidence makes it feel like they’ve been around a long time. Lea’s the older of the two at 25. Rihanna is 24.
(Photo credit: Jason Merritt/Getty Images; Mike Coppola/Getty Images)

4. The Real Housewives of Beverly HillsKyle Richards is practically Demi Moore’s doppelganger. Amazingly, Demi’s seven years older than Kyle. She turned 49 on November 11, while Kyle just hit 43 on January 11.
(Photo credit: Alberto E. Rodriguez/Getty Images; Jason Merritt/Getty Images)

5. Gwyneth Paltrow and Jennifer Lopez are two of the most gorgeous ladies in Hollywood, regardless of age. We would never have guessed it, but J-Lo’s three years older. She’s 42 to Gwyneth’s 39.
(Photo credit: Kevin Winter/Getty Images; Kevork Djansezian/Getty Images)

6. To us, Avril Lavigne’s fresh-faced look gives her a younger appearance than Lady Gaga’s heavily made-up look (well, looks). However, it’s Avril who’s older. She recently turned 27, while the Mama Monster is going to be 26 on March 28.
(Photo credit: Jason Merritt/Getty Images; Christopher Polk/Getty Images)

7. Alexis Bledel has hardly aged since her days on Gilmore Girls, but she’s actually 30 now. Khloé Kardashian is often mistakenly called the oldest Kardashian sister because she’s the tallest, but she’s actually the baby at 27.
(Photo credit: Matt Carr/Getty Images; Jason Merritt/Getty Images)

8. Kellan Lutz still plays high school students, while Ian Harding plays hot professor Ezra Fitz on Pretty Little Liars. Surprisingly, it’s Kellan who’s older: He’s 27, and Ian’s 25.
(Photo credit: Astrid Stawiarz/Getty Images; Jason Merritt/Getty Images)

9. Former child actresses Claire Danes and Sarah Michelle Gellar (Ringer) have aged beyond gracefully. It’s tough to tell, but Sarah’s almost exactly two years older. She’s turning 35 on April 14 and Claire’s 32.
(Photo credit: Frazer Harrison/Getty Images; Andy Kropa/Getty Images)

10. Calm down, Castle and Bones fans, we didn’t asking you who’s hotter this time, just who you think is older. It turns out David Boreanaz is the senior agent at 42 years old. Nathan Fillion is going to be 41 on March 27.
(Photo credit: Jason Merritt/Getty Images; Kevin Winter/Getty Images)

 

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For a detailed explanation of the quiz answers, click here.