Hilary Duff Sun's Out Bump's Out in Malibu

Hilary Duff's baby bump is growing by the minute, but that doesn't mean her summer beach days are behind her ... far from it, in fact.

Hilary and her boyfriend, Matthew Koma, hit up a beach in Malibu Tuesday for a little R&R as they await the birth of their child, which is definitely cooking at a healthy pace. She didn't shy away from the water ... Hilary jumps right in with Matt.

The couple announced they were having a baby girl this past June after rekindling their on-again, off-again romance in late 2017. She already has one kid, Luca Cruz Comrie, with ex-husband Mike Comrie.

As for this outing ... can't say we're all that surprised to find Hilary near a sandy shore. She's always been one to get the kiddos in the waves early and often -- whether they're 5 or not even born yet.

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