Steph McGovern is one lucky woman! The Steph's Packed Lunch presenter was treated to a surprise birthday party thrown by her partner at their family garden.Taking to her Instagram page on Tuesday, the TV star - who turned 39 on Monday - shared a series of snaps, including one of their daughter posing alongside giant number balloons and another of their incredible taco van.MORE: Steph McGovern shares glimpse into personal life with her girlfriend and their babyWATCH: Steph McGovern opens up about