Romeo Beckham aka Batman celebrated his sixth birthday yesterday, with a smattering of cute celebrity offspring among his guests. Mum Victoria led the caped crusader into his party at the Hard Rock Cafe, alongside his little brother Cruz who looked awesome (if a little grumpy) in a red Power Ranger costume. Gavin Rossdale left Gwen and new arrival Zuma at home, taking Kingston along to party it up with his friends. 
