Meghan Markle makes a splash on her 45th birthday with poolside photos

Another candle on the cake.

Meghan Markle took to Instagram Tuesday to share photos of her jumping into a pool to celebrate her 45th birthday.

In the images, the Duchess of Sussex rocked a black one-piece bathing suit and sunglasses as she plunged into the water while holding a handful of birthday balloons.

“Thank you for the birthday love! 🎈,” she captioned the post, which was set to the tune of Cliff Richard and The Shadows’ 1963 hit, “Summer Holiday.”

Page Six exclusively reported that some of the royal family will acknowledge Markle’s birthday — while others may ignore her special day amid her ongoing estrangement from her husband Prince Harry’s family.

“[King Charles III] is a scrupulously polite man, and I’m quite certain he would wish to send his daughter-in-law his birthday wishes,” royal commentator Tom Sykes exclusively told us.

Royal expert Kinsey Schofield told Page Six that the monarch, 77, would “quietly” send a birthday card or modest gift “through his staff” to the former “Suits” actress.

“Charles has always had a compassionate streak, and despite everything that’s happened, he has rarely gone out of his way to be overtly unkind toward Meghan,” Schofield told us. “A discreet gesture would be entirely in keeping with his character.”

However, Sykes believes Harry’s brother, Prince William, and his wife, Kate Middleton, will give Markle the cold shoulder.

“I don’t think they will be expecting any [birthday wishes] from Prince William and Catherine,” the author shared, adding that the Prince and Princess of Wales, both 44, will not acknowledge Markle’s birthday “in any capacity.”

Schofield added that the relationship between the As Ever founder and her in-laws “simply isn’t there anymore” after Markle and the Duke of Sussex, 41, quit the royal family in 2020.

“They believe Meghan played a significant role in the breakdown of family trust, and I think any suggestion that they’re secretly exchanging birthday wishes belongs more in the realm of wishful thinking than reality,” she claimed.

Harry and his wife have been easing back into Charles’ good graces.

The couple and their two children, Prince Archie, 7, and Princess Lilibet, 5, met privately with Harry’s dad and his wife, Queen Camilla, last month.

Though a source told Page Six that the reunion “wasn’t entirely warm and fuzzy,” the Invictus Games founder may stay in a room at Buckingham Palace when he returns to the UK in September.