May Birthday Babies

Shiloh Jolie-Pitt! Apple Martin! See which celeb tots are celebrating one to grow on this month

CAYDEN COSTNER

Four-year-old Cayden (who celebrates his birthday May 6) got into the swing of things at the 3M Celebrity Challenge at a Pebble Beach, Calif., golf course on Feb. 9 with a helping hand from dad Kevin Costner and little brother Hayes, 2, who pitched in as ball boy.