@gwynethpaltrow / Instagram 1 / 11
@gwynethpaltrow / Instagram 1 / 11

Gwyneth's little boy is growing up fast! Hours after she resurfaced in L.A. on Tuesday, April 8, Gwyneth Paltrow took to Twitter with a sweet birthday message for her son, Moses. (The Iron Man 3 actress and Coldplay frontman Chris Martin -- who announced their split last month -- also have a daughter, Apple, 9.)

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"Moses Bruce Paltrow Martin turns 8 today," the Goop founder wrote. "We love you!"

Included with the tweet was a photo of Paltrow, 41, hugging the birthday boy. Her left hand is displayed prominently in the cute picture -- as is her wedding ring.

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Incidentally, the Oscar-winning star was also spotted with her ring while out and about in L.A. on Tuesday. It was the first time she had been photographed since returning from her two-week family vacation to the Bahamas with Martin, 37, and their kids.

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"We are...and always will be a family, and in many ways we are closer than we have ever been," the Glee guest star and her husband said in a statement about their "conscious uncoupling" on March 25. They noted, too, that they are "parents first and foremost, to two incredibly wonderful children."

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