Princess Eugenie took the opportunity to wish her husband Jack Brooksbank a Happy Father's Day on Sunday 20 June as she called him "the ultimate dad" to their gorgeous four-month-old baby son August. The 31-year-old cousin of Prince William and Prince Harry posted some adorable snaps, with one of them showing Jack pushing baby August in a pram.The second photo saw Eugenie and Jack grin for a selfie as August was wrapped up in a tiny hat in his baby carrier as they went for a family stroll.