Jack Black will celebrate his 48th birthday on August 28th. The School of Rock star was born in Santa Monica, California in 1969. Shania Twain will turn 52 on Monday. The country music superstar was born in Windsor, Canada in 1965. Armie Hammer will celebrate 31 on the 28th. The Social Network star was born in Los Angeles in 1986. Florence Welch will turn 31-years-old on August 28th. The singer was born in 1986 in Camberwell, United Kingdom. Happy Birthday!