Catherine Zeta-Jones Shares a Sexy Bikini Snap of Her Toned Tummy

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Catherine Zeta-Jones gave her Instagram followers a glimpse at her day at the pool with a sexy swimsuit pic.

The 46-year-old actress snapped herself from the waist down, lounging in a string bikini. "#ThrowbackThursday to lounging poolside during my recent travel adventures. Bliss," she captioned the photo.

RELATED: Michael Douglas Reveals How He and Catherine Zeta-Jones Saved Their Marriage

Zeta-Jones didn't elaborate as to where this gorgeous pool is located, or if her husband Michael Douglas was with her, but she did post a pic a week ago of her posing in front of some beautiful blue water. "A beautiful spot for lunch!" Jones wrote.

When ET caught up with the actress' husband of nearly 16 years in February, we asked the 71-year-old actor what would be the biggest highlight of his career. Douglas immediately gushed, "Right now, it would probably be the Deauville Film Festival in 1999 when I met Catherine. That was the best memory I got."