It's hard to believe that Suri Cruise, the daughter of Katie Holmes and Tom Cruise is now 15 years old! Katie Holmes shared a sweet Birthday message to her daughter on Instagram with the caption, "Happy 15th Birthday Sweetheart! I love you!!!!!!!." Suri spent the day hanging out with her friends, grabbing ice cream in New York City. While everyone says that she is her Mom's twin.... she's looking a whole lot like her Dad in the picture below. HAPPY BIRTHDAY SIRI!