The brand said on its website: “Our best selling sweatshirt in black, personalized just for you!

“Made of super comfy ringspun cotton with your choice of vintage-style chainstitch lettering. The perfect cozy(sic) gift for yourself or someone you love.”

Following Meghan’s video, the brand posted a story on its Instagram page simply saying “wow” after the duchess wore one of its designs.

It added: “Meghan Markle is wearing a Club Chainstick sweatshirt [emotional eyes emoji].”

In another story linking Meghan’s top, the brand explained that Meghan wore the unisex black design, which had Archie and Lilibet embroidered on its collar.

Royal fans went into a frenzy about Meghan’s affordable jumper and also tagged the brand when expressing their jubilance congratulating its founder, Ann Leachman.

One user said: “Guys!!! The sweatshirt is @clubchainstick!!! I’ve never hit order so fast, only $73!”

Another one said: “Royalty knows quality when they see it!”

A third one posted a story featuring Meghan Markle’s top and told the founder: “For the win! [clapping hands emoji] Love you Ann!”