Star couple Caroline Wozniacki and David Lee have taken their summer getaway around the globe to Italy ... soaking up the sun at a pool in Portofino.

Of course, the former tennis superstar and ex-NBA hooper have been doing a bit of sight-seeing after Woz announced her retirement in January ... recently hitting up Saint-Jean-Cap-Ferrat in France.

And, just like in France, the couple ditched their clothes for their swimsuits ... proving there's no such thing as a retirement bod for either of them.

Woz decided to go with a one-piece patterned suit this time around ... although we know she's a big fan of bikinis -- even rocking one for a hike last week.

But, CW ain't the only one who can show off -- gotta give Lee his credit as well!!

We'll be sure to keep you posted on their next stop on the Hot Couple World Tour.