By Ayeesha Walsh Meghan Markle splashed the cash on a stylish sundress in a bid to keep cool on her tour of Nigeria with Prince Harry. The Duchess of Sussex, 42, was seen stepping out in the searing 95F heat in the stunning dress with a black and cream leaf print and cut-out details to the bust, as well as a thigh-high leg split in the design. Johanna Ortiz’s Tropicana Nights dress also features thick black and cream embellished straps to add to the chic and modern look. Meghan forked out a whopping £2,275 for the dress, which she wore with confidence as she strolled hand in hand with Harry fo…