Britney Spears sent birthday love to her sons Sean Preston and Jayden James on Tuesday, days after apologizing to them amid their ongoing estrangement.

In an Instagram post, the singer, 40, shared two photos of her teenage boys, who celebrate their birthdays days apart. Jayden turned 16 on Monday, while Preston turned 17 on Wednesday.

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Britney Spears Sends Happy Birthday Message to Sons amid Estrangement | PEOPLE