Spring showers brought out hats full of flowers — and not a single petal was out of place. A light rain couldn’t dampen spirits at the famed Frederick Law Olmsted Awards Luncheon, affectionately known as “The Hat Lunch,” on Wednesday, where the city’s top socialites tipped their brims, raising a record-breaking $5.3 million for Central Park. Martha Stewart, who turned up at the garden party in a gold brocade coat topped with a vintage gold hat, reminisced about visiting the park with her father at just three-years-old. Martha Stewart went for a gilded look with a gold vintage hat and brocade jacket for the Central Park Conservancy’s “Hat Lunch.” Sonia Moskowitz Gordon/ZUMA / SplashNews.com Stewart told us she has fond memories of going to the park with her father as a child. Angelina Katsanis for NY Post “We rode ponies in the pony ring when there were ponies here,” she told us. “We would go into the lake in a rowboat. They used to rent a rowboat for a dollar a day.…