Glowing Prince Harry and Meghan Markle attend an MLB game in London

Prince Harry and Meghan, Duchess of Sussex are getting in touch with her American roots with a trip to the first-ever regular season Major League Baseball game played in Europe.

And what a game! Archie’s mom (mum?) and dad are getting a taste of the biggest rivalry in baseball – the New York Yankees are taking on the Boston Red Sox in a two-game series this weekend.

For the summer Saturday event, the glowing duchess wore a belted knee-length black dress, reportedly by Stella McCartney, with a flirty full skirt and matching slingback flats, possibly taking care to avoid blue or red in order to appear neutral. The prince was dressed casually in an Invictus polo shirt, black pants and sneakers – similar to the outfit he wore the first time the couple stepped out together in Toronto.

Both teams gave the royal couple team onesies with their little one’s first name on the back.

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Meghan Markle and Prince Harry attend MLB game
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Meghan Markle and Prince Harry attend MLB game
LONDON, ENGLAND - JUNE 29: In this handout image provided by The Invictus Games Foundation, Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex join the Boston Red Sox in their Clubhouse and receive gifts for Archie ahead of their match against the New York Yankees at the London Stadium on June 29, 2019 in London, England. The historic two-game "You Just Can’t Beat The Person Who Never Gives Up" series marks the sport’s first games ever played in Europe and The Invictus Games Foundation has been selected as the official charity of Mitel and MLB London Series 2019. (Photo by Handout/Chris Jackson/Invictus Games Foundation via Getty Images)
LONDON, ENGLAND - JUNE 29: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex accompany Invictus Games competitors on the field for the ceremonial first pitch before game one of the London Series between the New York Yankees and the Boston Red Sox at London Stadium on Saturday, June 29, 2019 in London, England. (Photo by Alex Trautwig/MLB Photos via Getty Images)
LONDON, ENGLAND - JUNE 29: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex accompany Invictus Games competitors on the field for the ceremonial first pitch before game one of the London Series between the New York Yankees and the Boston Red Sox at London Stadium on Saturday, June 29, 2019 in London, England. (Photo by Alex Trautwig/MLB Photos via Getty Images)
LONDON, ENGLAND - JUNE 29: In this handout image provided by The Invictus Games Foundation, Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex pose with Invictus Games Competitors and players following the first pitch at the Boston Red Sox against the New York Yankees match at the London Stadium on June 29, 2019 in London, England. The historic two-game "You Just Can’t Beat The Person Who Never Gives Up" series marks the sport’s first games ever played in Europe and The Invictus Games Foundation has been selected as the official charity of Mitel and MLB London Series 2019. (Photo by Handout/Chris Jackson/Invictus Games Foundation via Getty Images)
LONDON, ENGLAND - JUNE 29: In this handout image provided by The Invictus Games Foundation, Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex join the New York Yankees in their Clubhouse and receive gifts for Archie ahead of their match against the Boston Red Sox at the London Stadium on June 29, 2019 in London, England. The historic two-game "You Just Can’t Beat The Person Who Never Gives Up" series marks the sport’s first games ever played in Europe and The Invictus Games Foundation has been selected as the official charity of Mitel and MLB London Series 2019. (Photo by Handout/Chris Jackson/Invictus Games Foundation via Getty Images)
LONDON, ENGLAND - JUNE 29: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex look on during the pre-game ceremonies before the MLB London Series game between Boston Red Sox and New York Yankees at London Stadium on June 29, 2019 in London, England. (Photo by Dan Istitene - Pool/Getty Images)
LONDON, ENGLAND - JUNE 29: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex look on during the pre-game ceremonies before the MLB London Series game between Boston Red Sox and New York Yankees at London Stadium on June 29, 2019 in London, England. (Photo by Dan Istitene - Pool/Getty Images)
LONDON, ENGLAND - JUNE 29: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex look on during the pre-game ceremonies before the MLB London Series game between Boston Red Sox and New York Yankees at London Stadium on June 29, 2019 in London, England. (Photo by Dan Istitene - Pool/Getty Images)
LONDON, ENGLAND - JUNE 29: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex accompany Invictus Games competitors on the field for the ceremonial first pitch before game one of the London Series between the New York Yankees and the Boston Red Sox at London Stadium on Saturday, June 29, 2019 in London, England. (Photo by Alex Trautwig/MLB Photos via Getty Images)
LONDON, ENGLAND - JUNE 29: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex pose for a photo with the New York Yankees in the clubhouse prior to game one of the London Series between the New York Yankees and the Boston Red Sox at London Stadium on Saturday, June 29, 2019 in London, England. (Photo by Alex Trautwig/MLB Photos via Getty Images)
LONDON, ENGLAND - JUNE 29: Yankees manager Aaron Boone #17 of the New York Yankees presents Meghan, Duchess of Sussex and Prince Harry, Duke of Sussex with a gift in the clubhouse prior to game one of the London Series between the New York Yankees and the Boston Red Sox at London Stadium on Saturday, June 29, 2019 in London, England. (Photo by Alex Trautwig/MLB Photos via Getty Images)
Britain's Prince Harry, Duke of Sussex and Britain's Meghan, Duchess of Sussex watch the first of a two-game series between the New York Yankees and the Boston Red Sox at London Stadium in Queen Elizabeth Olympic Park, east London on June 29, 2019. - As Major League Baseball prepares to make history in London, New York Yankees manager Aaron Boone and Boston Red Sox coach Alex Cora are united in their desire to make the ground-breaking trip memorable on and off the field. (Photo by Tolga AKMEN / AFP) (Photo credit should read TOLGA AKMEN/AFP/Getty Images)
Britain's Prince Harry, Duke of Sussex and Britain's Meghan, Duchess of Sussex arrive on the field prior to the start of the first of a two-game series between the New York Yankees and the Boston Red Sox at London Stadium in Queen Elizabeth Olympic Park, east London on June 29, 2019. - As Major League Baseball prepares to make history in London, New York Yankees manager Aaron Boone and Boston Red Sox coach Alex Cora are united in their desire to make the ground-breaking trip memorable on and off the field. (Photo by Tolga AKMEN / AFP) (Photo credit should read TOLGA AKMEN/AFP/Getty Images)
Britain's Prince Harry, Duke of Sussex and Britain's Meghan, Duchess of Sussex arrive on the field prior to the start of the first of a two-game series between the New York Yankees and the Boston Red Sox at London Stadium in Queen Elizabeth Olympic Park, east London on June 29, 2019. - As Major League Baseball prepares to make history in London, New York Yankees manager Aaron Boone and Boston Red Sox coach Alex Cora are united in their desire to make the ground-breaking trip memorable on and off the field. (Photo by PETER NICHOLLS / POOL / AFP) (Photo credit should read PETER NICHOLLS/AFP/Getty Images)
Britain's Prince Harry, Duke of Sussex and Britain's Meghan, Duchess of Sussex arrive on the field prior to the start of the first of a two-game series between the New York Yankees and the Boston Red Sox at London Stadium in Queen Elizabeth Olympic Park, east London on June 29, 2019. - As Major League Baseball prepares to make history in London, New York Yankees manager Aaron Boone and Boston Red Sox coach Alex Cora are united in their desire to make the ground-breaking trip memorable on and off the field. (Photo by PETER NICHOLLS / POOL / AFP) (Photo credit should read PETER NICHOLLS/AFP/Getty Images)
Britain's Prince Harry, Duke of Sussex and Britain's Meghan, Duchess of Sussex arrive on the field prior to the start of the first of a two-game series between the New York Yankees and the Boston Red Sox at London Stadium in Queen Elizabeth Olympic Park, east London on June 29, 2019. - As Major League Baseball prepares to make history in London, New York Yankees manager Aaron Boone and Boston Red Sox coach Alex Cora are united in their desire to make the ground-breaking trip memorable on and off the field. (Photo by Tolga AKMEN / AFP) (Photo credit should read TOLGA AKMEN/AFP/Getty Images)
LONDON, ENGLAND - JUNE 29: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex pose with members of the Invictus Games Foundation and baseball players before the Boston Red Sox vs New York Yankees baseball game at London Stadium on June 29, 2019 in London, England. The game is in support of the Invictus Games Foundation. (Photo by Peter Nicholls - WPA Pool/Getty Images)
Britain's Prince Harry, Duke of Sussex, and his wife Meghan, Duchess of Sussex react as they are presented with gifts for her newborn son Archie, as they meet New York Yankees players ahead of their match against the Boston Red Sox at the London Stadium in Queen Elizabeth Olympic Park, east London on June 29, 2019, for the first of a two-game Baseball series in London. - As Major League Baseball prepares to make history in London, New York Yankees manager Aaron Boone and Boston Red Sox coach Alex Cora are united in their desire to make the ground-breaking trip memorable on and off the field. (Photo by PETER NICHOLLS / POOL / AFP) (Photo credit should read PETER NICHOLLS/AFP/Getty Images)
Britain's Prince Harry, Duke of Sussex and his wife Meghan, Duchess of Sussex meet Boston Red Sox players ahead of their match against the New York Yankees at London Stadium in Queen Elizabeth Olympic Park, east London on June 29, 2019, for the first of a two-game Baseball series in London. - As Major League Baseball prepares to make history in London, New York Yankees manager Aaron Boone and Boston Red Sox coach Alex Cora are united in their desire to make the ground-breaking trip memorable on and off the field. (Photo by PETER NICHOLLS / POOL / AFP) (Photo credit should read PETER NICHOLLS/AFP/Getty Images)
Britain's Prince Harry, Duke of Sussex (R) and Meghan, Duchess of Sussex arrive to watch the New York Yankees and the Boston Red Sox play the first of a two-game Baseball series at London Stadium in Queen Elizabeth Olympic Park, east London on June 29, 2019. - As Major League Baseball prepares to make history in London, New York Yankees manager Aaron Boone and Boston Red Sox coach Alex Cora are united in their desire to make the ground-breaking trip memorable on and off the field. (Photo by PETER NICHOLLS / POOL / AFP) (Photo credit should read PETER NICHOLLS/AFP/Getty Images)
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Yankee’s clubhouse reporter Meredith Marakovits shared a video of the two saying hello in the Yankee locker room. “That is incredible, thank you,” gushed Markle when handed the gift.

The beaming couple also posed with both teams, with a smiling duchess holding up the new onesies.

The London Baseball Series is being held in partnership with the Invictus Games Foundation, of which the Prince and Duchess are patrons. Harry founded the games, which are an international sporting event for wounded, injured and sick service personnel. The first games took place in London back in 2014 and the couple made their public debut at the 2017 games in Toronto, Canada when Markle was still starring in Suits.

What a difference two years makes! The couple have now been married over a year, and are parents to a newborn son. This is the Duchess’ first appearance since Trooping the Colour on June 8th, and her second since taking maternity leave.

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Meghan Markle at Trooping the Colour
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Meghan Markle at Trooping the Colour
The Duke and Duchess of Sussex make their way along The Mall to Horse Guards Parade, in London, ahead of the Trooping the Colour ceremony, as Queen Elizabeth II celebrates her official birthday. (Photo by Gareth Fuller/PA Images via Getty Images)
LONDON, ENGLAND - JUNE 08: Prince Harry, Duke of Sussex and Meghan, Duchess of Sussex ride by carriage down the Mall during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
The Duke and Duchess of Sussex make their way along The Mall to Buckingham Palace, in London, after the Trooping the Colour ceremony, as Queen Elizabeth II celebrates her official birthday. (Photo by Victoria Jones/PA Images via Getty Images)
The Duke and Duchess of Sussex with the Duchess of Cambridge and the Duchess of Cornwall make their way along The Mall to Horse Guards Parade, in London, ahead of the Trooping the Colour ceremony, as The Queen celebrates her official birthday. (Photo by Gareth Fuller/PA Images via Getty Images)
The Duke and Duchess of Sussex make their way along The Mall to Horse Guards Parade, in London, ahead of the Trooping the Colour ceremony, as The Queen celebrates her official birthday. (Photo by Gareth Fuller/PA Images via Getty Images)
LONDON, ENGLAND - JUNE 08: Meghan, Duchess of Sussex rides by carriage down the Mall during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
Britain's Meghan, Duchess of Sussex (L) and Britain's Prince Harry, Duke of Sussex (R) make their way in a horse drawn carriage to Horseguards parade ahead of the Queen's Birthday Parade, 'Trooping the Colour', in London on June 8, 2019. - The ceremony of Trooping the Colour is believed to have first been performed during the reign of King Charles II. Since 1748, the Trooping of the Colour has marked the official birthday of the British Sovereign. Over 1400 parading soldiers, almost 300 horses and 400 musicians take part in the event. (Photo by Daniel LEAL-OLIVAS / AFP) (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
The Duke and Duchess of Sussex make their way along The Mall to Buckingham Palace, in London, after the Trooping the Colour ceremony, as Queen Elizabeth II celebrates her official birthday. (Photo by Victoria Jones/PA Images via Getty Images)
Britain's Meghan, Duchess of Sussex (L) and Britain's Prince Harry, Duke of Sussex (R) return to Buckingham Palace after the Queen's Birthday Parade, 'Trooping the Colour', in London on June 8, 2019. - The ceremony of Trooping the Colour is believed to have first been performed during the reign of King Charles II. Since 1748, the Trooping of the Colour has marked the official birthday of the British Sovereign. Over 1400 parading soldiers, almost 300 horses and 400 musicians take part in the event. (Photo by Daniel LEAL-OLIVAS / AFP) (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
Britain's Meghan, Duchess of Sussex returns to Buckingham Palace after the Queen's Birthday Parade, 'Trooping the Colour', in London on June 8, 2019. - The ceremony of Trooping the Colour is believed to have first been performed during the reign of King Charles II. Since 1748, the Trooping of the Colour has marked the official birthday of the British Sovereign. Over 1400 parading soldiers, almost 300 horses and 400 musicians take part in the event. (Photo by Daniel LEAL-OLIVAS / AFP) (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
LONDON, ENGLAND - JUNE 08: Meghan, Duchess of Sussex and Prince Harry, Duke of Sussex arrive at Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Chris Jackson/Getty Images)
The Duke and Duchess of Sussex make their way along The Mall to Horse Guards Parade, in London, ahead of the Trooping the Colour ceremony, as The Queen celebrates her official birthday. (Photo by Victoria Jones/PA Images via Getty Images)
Britain's Meghan, Duchess of Sussex smiles as she and Britain's Prince Harry, Duke of Sussex (not pictured) make their way in a horse drawn carriage to Horseguards parade ahead of the Queen's Birthday Parade, 'Trooping the Colour', in London on June 8, 2019. - The ceremony of Trooping the Colour is believed to have first been performed during the reign of King Charles II. Since 1748, the Trooping of the Colour has marked the official birthday of the British Sovereign. Over 1400 parading soldiers, almost 300 horses and 400 musicians take part in the event. (Photo by Daniel LEAL-OLIVAS / AFP) (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
The Duke and Duchess of Sussex with the Duchess of Cambridge and the Duchess of Cornwall make their way along The Mall to Horse Guards Parade, in London, ahead of the Trooping the Colour ceremony, as The Queen celebrates her official birthday. (Photo by Gareth Fuller/PA Images via Getty Images)
Britain's Meghan, Duchess of Sussex smiles as she and Britain's Prince Harry, Duke of Sussex (not pictured) make their way in a horse drawn carriage to Horseguards parade ahead of the Queen's Birthday Parade, 'Trooping the Colour', in London on June 8, 2019. - The ceremony of Trooping the Colour is believed to have first been performed during the reign of King Charles II. Since 1748, the Trooping of the Colour has marked the official birthday of the British Sovereign. Over 1400 parading soldiers, almost 300 horses and 400 musicians take part in the event. (Photo by Daniel LEAL-OLIVAS / AFP) (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
The Duke and Duchess of Sussex make their way along The Mall to Horse Guards Parade, in London, ahead of the Trooping the Colour ceremony, as The Queen celebrates her official birthday. (Photo by Victoria Jones/PA Images via Getty Images)
LONDON, ENGLAND - JUNE 08: Meghan, Duchess of Sussex attends Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Karwai Tang/WireImage)
The Duke and Duchess of Sussex make their way along The Mall to Horse Guards Parade, in London, ahead of the Trooping the Colour ceremony, as The Queen celebrates her official birthday. (Photo by Gareth Fuller/PA Images via Getty Images)
LONDON, ENGLAND - JUNE 08: Prince Harry, Duke of Sussex. Meghan, Duchess of Sussex and Catherine, Duchess of Cambridge ride by carriage down the Mall during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - JUNE 08: Meghan, Duchess of Sussex, Camilla, Duchess of Cornwall and Catherine, Duchess of Cambridge ride by carriage down the Mall during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
LONDON, ENGLAND - JUNE 08: Prince Harry, Duke of Sussex. Meghan, Duchess of Sussex and Catherine, Duchess of Cambridge ride by carriage down the Mall during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
The Duke and Duchess of Sussex make their way along The Mall to Horse Guards Parade, in London, ahead of the Trooping the Colour ceremony, as The Queen celebrates her official birthday. (Photo by Gareth Fuller/PA Images via Getty Images)
The Duke and Duchess of Sussex make their way along The Mall to Horse Guards Parade, in London, ahead of the Trooping the Colour ceremony, as The Queen celebrates her official birthday. (Photo by Gareth Fuller/PA Images via Getty Images)
The Duke and Duchess of Sussex make their way along The Mall to Horse Guards Parade, in London, ahead of the Trooping the Colour ceremony, as The Queen celebrates her official birthday. (Photo by Gareth Fuller/PA Images via Getty Images)
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