Meghan Markle is glamorous in white Calvin Klein for visit to the Natural History Museum

Nearly there!

Meghan Markle, who is seven months along in her first pregnancy, stepped out on Tuesday night alongside husband Prince Harry for a visit to the Natural History Museum in London. The royal couple was attending a production of "The Wider Earth" in support of the Queen's Commonwealth Trust and The Queen's Commonwealth Canopy to raise awareness on forest conservation.

The Duke and Duchess of Sussex also met with children from Urbanwise London, an educational charity that helps connect children to hands-on learning, and took a closer look at the artistry and superb puppetry utilized in the show.

For the occasion, the duke opted for a simple navy suit and tie, while Meghan went for an all-white ensemble. She paired her winter-white turtleneck dress by Calvin Klein with a chic coat by Amanda Wakeley, complementing the radiant look with olive green pumps and matching olive clutch. The mum-to-be accessorised with simple diamond studs and a volumised updo and looked absolutely gorgeous.