Media playback is unsupported on your device Media caption Prince Harry and Meghan were presented with baseball-themed gifts for baby Archie

The Duchess of Sussex made a surprise appearance at the London Stadium, when she joined her husband for a Major League Baseball match between Boston Red Sox and the New York Yankees.

The royal couple attended the first of a two-game series, which is being held to promote American baseball in the UK.

Before the match they were presented with a Yankees shirt and a Red Sox baby bodysuit for their son Archie.

It is the first regular-season, MLB game to be played in Europe.

Organisers want to grow the sport internationally.

Although this is not the first time MLB matches have been played outside the US or Canada, MLB vice-president of international strategy Charlie Hill said: "We want more people aware, playing and watching our sport."

MLB is also putting on a three-day festival in east London at which fans can immerse themselves in American culture, food and live music.

Prince Harry and Meghan, Duchess of Sussex were joined by members of the Invictus Games Foundation on the field for a ceremonial first pitch.

Image copyright Getty Images Image caption The royal couple were seen walking arm in arm ahead of the two-game series

Image copyright Getty Images Image caption Meghan is all laughs as manager of the New York Yankees, Aaron Boone, presented her with a gift for Archie

Image copyright Getty Images Image caption The royal couple pose with the New York Yankees ahead of the game

Image copyright Getty Images Image caption Not wanting to pick favourites, the couple also posed for a group photo with the Boston Red Sox

Image copyright Getty Images