1. Harry Styles & Mick Jagger
Photos: Getty Images
Harry was born in 1994 and Mick was born in 1943.
2. Halsey & Pink
Photos: Getty Images
Halsey was born in 1994 and P!nk was born in 1979.
2. Ashley Graham & Eva Mendes
Photos: Getty Images
Ashley was born in 1987 and Eva was born in 1974.
3. Zac Efron & Leonard Whiting
Photos: Getty Images
Zac was born in 1987 and Leonard was born in 1950.
4. Jesy Nelson & Geri Halliwell
Photos: Instagram@jesynelson/Getty Images
Jesy was born in 1992 and Geri was born in 1972.
5. Kelsea Ballerini & Reese Witherspoon
Photos: Getty Images
Kelsea was born in 1993 and Reese was born in 1976.
6. Taylor Swift & Debbie Harry
Photos: Getty Images
Taylor was born in 1989 and Debbie was born in 1955.
7. Andra Day & Billie Holiday
Photos: Getty Images
Andra was born in 1984 and Billie was born in 1915.
8. Carly Rae Jepsen & Carly Simon
Photos: Getty Images
Carly Rae was born in 1985 and Carly Simon was born in 1945.
9. Selena Gomez & Annette Funicello
Photos: Getty Images
Selena was born in 1992 and Annette was born in 1942.
10. Zendaya & Rihanna
Photos: Getty Images
Zendaya was born in 1996 and Rihanna was born in 1988.
11. Justin Bieber & Vanilla Ice
Photos: Getty Images
Justin was born in 1994 and Vanilla Ice was born in 1967.
12. Janis Joplin & Joss Stone
Photos: Getty Images
Janis was born in 1943 and Joss was born in 1987.
13. Gwen Stefani & Madonna
Photos: Getty Images
Gwen was born in 1969 and Madonna was born in 1958.
14. Teyana Taylor & Dionne Warwick
Photos: Getty Images
Teyana was born in 1990 and Dionne was born in 1940.
15. Michael Clifford of 5SOS & Gerard Way of My Chemical Romance
Photos: Getty Images
Michael was born in 1995 and Gerard was born in 1977.
16. Victoria Justice & Nicole Scherzinger
Photos: Getty Images
Victoria was born in 1993 and Nicole was born in 1978.
17. Sam Smith & George Michael
Photos: Getty Images
Sam Smith was born in 1992 and George Michael was born in 1963.
18. Kendall Jenner & Cher
Photos: Getty Images
Kendall was born in 1995 and Cher was born in 1946.
19. Christina Aguilera & Cyndi Lauper
Photos: Getty Images
Christina was born in 1980 and Cyndi was born in 1953.
20. Beyonce Knowles & Tina Turner
Photos: Getty Images
Beyonce was born in 1981 and Tina was born in 1939.
21. Milly Bobby Brown & Natalie Portman
Photos: Getty Images
Millie was born in 2004 and Natalie was born in 1981.
22. Billie Eilish & Scarlet Johansson
Photos: Getty Images
Billie was born in 2001 and Scarlett was born in 1984.
23. Nicki Minaj & Chaka Khan
Photos: Getty Images
Nicki was born in 1982 and Chaka was born in 1953.
24. Lily Collins & Audrey Hepburn
Photos: Youtube/Getty Images
Lily Collins was born in 1989 and Audrey was born in 1929.
25. Julianne Hough & Meg Ryan
Photos: Getty Images
Julianne was born in 1988 and Meg was born in 1961.
26. Rachel Bilson and Kaia Gerber
Photos: Getty Images
Rachel was born in 1981 and Kaia was born in 2001.
27. Brittany Murphy and Lili Reinhart
Photos: Getty Images
Brittany was born in 1977 and Lili was born in 1996.
28. Rob Lowe and Ian Somerhalder
Photos: Getty Images
Rob was born in 1964 and Ian was born in 1978.
29. Carrie Underwood and Emily Osment
Photos: Getty Images
Carrie was born in 1983 and Emily was born in 1992.
30. Carla Bruni and Bella Hadid
Photos: Getty Images
Carla was born in 1967 and Bella was born in 1996.