1. When is National Siblings Day celebrated? April 10
2. What famous twins starred in Full House and later launched their own fashion empire? Mary-Kate and Ashley Olsen
3. Which Hemsworth brother played Thor in the Marvel Cinematic Universe? Chris Hemsworth
4. Which NFL brothers became the first siblings to face off in a Super Bowl in 2023? Jason and Travis Kelce
5. What show features animated siblings named Lisa, Bart, and Maggie? The Simpsons
6. Who founded International Siblings Day? Cynthia Williams
7. What Disney Channel show featured twin brothers living in a hotel? The Suite Life of Zack & Cody
8. Which country first celebrated Siblings Day? United States
9. Who were the legendary twin founders of Rome, according to Roman mythology? Romulus and Remus
10. Which famous sibling duo stars as mermaids and R&B icons? Chloe x Halle
11. Which 19th-century political siblings played major roles in the German socialist movement? Karl and Heinrich Marx
12. Which pair of NBA siblings have both played for the Golden State Warriors? Stephen and Seth Curry
13. Which famous artists were also siblings and central figures in the post-impressionist art movement? Vincent and Theo van Gogh
14. Which two Kardashian sisters co-founded the beauty brand KKW? Kim and Kourtney
15. Which pair of brothers are known for starring in romantic comedies and superhero movies, respectively? James and Dave Franco
16. Which biblical siblings include a tragic tale of jealousy and betrayal? Cain and Abel
17. Which baseball legend has a brother named Dom, who also played in the MLB? Joe DiMaggio
18. Which pair of sisters have dominated women’s tennis for over two decades, with multiple Grand Slam titles? Serena and Venus Williams
19. Which famous brothers are credited with inventing and flying the first successful airplane in 1903? Orville and Wilbur Wright
20. Which ancient Egyptian siblings were famously married and ruled together? Cleopatra and Ptolemy XIII
21. Billie Eilish often collaborates with which family member? Her brother Finneas
22. What famous storytelling siblings collected and published fairy tales like Cinderella, Hansel and Gretel, and Snow White? The Brothers Grimm
23. What does International Siblings Day celebrate? The bond between siblings
24. Which pop star has a younger sister named Solange, who’s also a singer? Beyoncé
25. The Jonas Brothers reunited in 2019 with what hit song? "Sucker"
