??Olivia Wilde  pregnant tank boots dog

Olivia Wilde's baby bump is growing bigger by the day ... and what better way to dress it than in an Yves Saint Laurent tee?!

The mom-to-be stopped for some java (decaf, we assume) in Venice, on Thursday, along with her adorable pooch, Paco.

The actress has about three months to go before she delivers a baby boy -- her first child with fiance Jason Sudeikis. Once they welcome the little one, it'll be back to work for Wilde -- she'll be staring in and producing psychological thriller Meadowland in July!