Milo Ventimiglia is expecting his first child with his wife Jarah Mariano. The actor married his partner last year and now they have confirmed they are set to become first-time parents with Jarah sharing pictures of her baby bump as she posed in a bikini on a surfboard in her native Hawaii. In the post on Instagram, the 39-year-old model added: “Baby on board”. The couple’s baby announcement comes a week after they celebrated their first wedding anniversary with Jarah marking the moment on Instagram, writing: “Last year I married my best friend. There aren’t enough words that exist to describe…