WWW.ACEPIXS.COM....October 16 2012, New York City....Musicians Katy Perry and John Mayer set out to celebrate Mayer's 35th birthday on October 16 2012 in New York City....By Line: Zelig Shaul/ACE Pictures......ACE Pictures, Inc...tel: 646 769 0430..Email: info@acepixs.com..www.acepixs.com