Prince Harry introduces Meghan Markle to Kate Middleton and Princess Charlotte

Prince Harry introduced his girlfriend Meghan Markle to Kate Middleton on Tuesday, The Sun reports.

Harry's relationship with the "Suits" actress has been heating up over the past couple of months ever since being made public back in the fall, and this was a further sign of how serious they've gotten.

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"Kate was really looking forward to meeting Meghan," a source told The Sun. "She knew how important it was to Harry. They are very close, and he really values her opinion on girlfriends."

The pair famously keeps a low profile when they spend time together, only having been photographed a handful of times in public. They have yet to make an official public appearance together.

According to sources, the meeting went "really well," with Prince William -- who Markle had already met -- and their daughter, Princess Charlotte, also present at Kate's apartment in Kensington Palace.

See photos of Meghan Markle and Prince Harry:

The big move happened just after the Duchess of Cambridge celebrated her 35th birthday, so Meghan made sure to come prepared. She brought Middleton a little present: A "dream diary for her thoughts and ideas, which Kate loved."

It sounds like their introduction could not have gone more smoothly, which definitely came as a relief for Harry, who has developed a special bond with his sister-in-law.

"Obviously, Harry's mother, Princess Diana, died when he was very young, so Kate really fulfills that older sister/maternal role [for him]," a source added.

Is another royal wedding on the horizon? Only time will tell!

See Kate Middleton's style transformation:

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