Bradley Cooper's bike ride with girlfriend on b'day

Actor Bradley Cooper began his 39th birthday celebrations with a motorcycle ride with his girlfriend Suki Waterhouse.

"The Hangover" star turned a year older Jan 5, reports eonline.com.

After spending a day at the gym, the couple was spotted zooming off on Cooper's bike. It was a double treat for the couple who share their birthdays.

Their birthday plans have not been revealed as yet.