British Airways has tweeted a photo of its first Airbus A350-1000, newly painted with the Oneworld carrier's livery.
Cirium's Fleets Analyzer shows that IAG-owned BA has 18 A350-1000s on order.
The first, set to arrive in July, will debut a new business-class seat within a three-class layout which accommodates 331 passengers.
Another three A350-1000s are to join the BA fleet by year-end, followed by eight in 2020, five in 2021 and the final one in 2022, Fleets Analyzer indicates. The UK airline also holds options on a further 18 of the aircraft.
Airbus has also posted an image of the first BA A350-1000 on Twitter. The twinjet has spent "a couple of days being pampered by our paint-shop teams", notes the manufacturer, adding: "Next up? First flight!"