Maria Shriver was glimpsed beaming as she arrived at the 79th birthday festivities of her ex-husband Arnold Schwarzenegger in Los Angeles this week. Shriver, 70, tied the knot with Schwarzenegger in 1986 and welcomed four children with him – Katherine, 36, Christina, 35, Patrick, 32, and Christopher, 28. Their marriage collapsed in 2011 when the family was engulfed in scandal by news Schwarzenegger had fathered a child with their housekeeper Mildred 'Patty' Baena. Patty and Schwarzenegger's son Joseph Baena, 28, has grown into the spitting image of his father and followed in his footsteps to become a bodybuilder. Meanwhile,…
