VIDEO : Ben Affleck Spends Birthday With Jennifer Garner and Kids

Ben Aflleck and his estranged wife Jennifer Garner reunited for a family day out at Universal Orlando Studios in Florida on Saturday to celebrate the actor?s birthday. The former Hollywood couple announced its shock split in June after 10 years of marriage, but the stars were back together over the weekend as they took their three children, nine-year-old Violet, six-year-old Seraphina, and three-year-old son Samuel, to the Wizarding World of Harry Potter. An onlooker tells People.com, ?Neither of them looked too happy."