Sweet detail hidden in Meghan Markle's baseball outfit that all completely missed

Meghan Markle delighted fans when she made a surprise appearance at a baseball game in London.

She joined her husband Prince Harry to watch the Yankees take on the Red Sox at the Queen Elizabeth Olympic Park in Europe's first ever Major League Baseball game.

The new parents left Archie at home as they met the teams before heading into the stands to watch the match, and from the photos it looks like they loved every second.

Meghan looked lovely in a black Stella McCartney dress with a belt and matching pumps.

But there was an extra special detail in her outfit that most people completely missed - her earrings.

The Duchess added a splash of colour to her black outfit with a pair of Jennifer Meyer earrings.

The $395 (Sh40.5K) accessories are made from 18-carat gold with a turquoise inlay.

Heather Askinoise, co-founder of Energy Muse, believes there is probably a very specific reason for her choice.

She told People: "It is a wonderful gemstone to connect with when you want to bring focus to your health.

"Turquoise is the perfect crystal for a new mom as it is said to bring blessings to those who wear it."

The online store's description states: "Jennifer Meyer's pieces are the perfect way to celebrate life events or mark important milestones.

"Handcrafted from polished 18-karat gold, these dainty earrings have a sleek rectangular shape that's inlaid with brilliant turquoise stones.

"Gift them to someone special and they'll fondly remember the occasion with each wear."

It's not the first time she's worn turquoise jewellery since Archie was born, and she wore a necklace featuring it when she first introduced the world to him a few days after giving birth.

Meghan and Harry attended the baseball game to promote the Duke's Invictus Games Foundation, which is partnered with the event.

Both teams gave the couple baby-sized shirts for their side, including an adorable New York Yankees shirt with Archie's name on the back.