looked very bit the chic summer traveler in a black bikini while on vacation with her family.
The Oscar-winning actress showed off her rock hard abs
which she works on with celeb trainer Tracy Anderson
Gwyn's ex, Chris Martin
, wasn't spotted on board the luxury yacht though there was a mystery man walking around!
The 44-year-old recently graced the cover of Women's Health Australia and talked about her exercise routine.
She said, "I drop the kids at school, work out, go to work. I've been supplementing it a bit with lifting heavier weights lately, to deal with some lower-back-pain issues."
Gwyneth believes in making working out a habit, just like brushing your teeth! She says, "I like feeling good, and I know I feel my best when I exercise."