It's baby moon season!

Late last week, mom-to-be Kate Hudson headed south of the border with Matt Bellamy, her beau and dad to her unborn child.

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Expecting her second child (and her first with Bellamy), Hudson, 31, draped her growing bump by the beach at the Four Seasons Resort Punta Mita near Puerto Vallarta, Mexico in snaps taken last Thursday.

Muse frontman Bellamy, 32, lounged with a book (Born to Run) while Hudson played in the sand with Ryder, her 7-year-old son with ex-husband Chris Robinson.

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Bellamy couldn't help but gush about his love, whom he has been dating since spring 2010, at last month's Grammys. Accepting his band's trophy for Best Rock Album, Bellamy thanked "my beautiful pregnant girlfriend" who looked on bashfully in the audience.

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Another Hollywood couple celebrating their baby-to-be in a romantic spot? Natalie Portman and her fiance, dancer Benjamin Millepied, who hit California's Napa Valley for a lavish but low-key babymoon following her Oscar victory.

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