"Proper hiking attire not required ud83dude0e"
No lies detected here -- 'cause recently retired tennis superstar Caroline Wozniacki did an impromptu photo shoot while on a hike in France ... and all she needed was a tiny yellow bikini!!
The 30-year-old and her ex-NBA player husband David Lee are enjoying a "Staycation" in Saint-Jean-Cap-Ferrat, France ... just a quick 30-minute drive from one of their homes in Monte-Carlo, Monaco.
Wozniacki and Lee recently had their 1-year wedding anniversary in June and celebrated her birthday last month ... so there's been a LOT to celebrate!