Kate Walsh, 46, sizzles in skimpy yellow bikini while frolicking in the ocean with boyfriend Chris Case in Miami
Published: 21:43 BST, 15 June 2014 | Updated: 09:11 BST, 16 June 2014
She will be playing a judge that defies the law in the upcoming NBC comedy, Bad Judge.
And on Sunday, 46-year-old Kate Walsh defied her age in a tiny string bikini that showed off her enviably toned physique to full effect.
The flame haired Private Practice actress looked every inch the head-turner as she frolicked in the ocean with her boyfriend Chris Case in Miami Beach.
Defying her age! Kate Walsh turned heads in a tiny string bikini that showed off her svelte physique to full effect in Miami Beach on Sunday
Kate looked thrilled to be spending the day with her boyfriend of three years.
The couple took to the sea to embrace one another and exchange kisses.
Chris - who produced the comedy Reba - tenderly cradled his girlfriend as they floated in the surf.
Loved up: Kate nuzzled against her boyfriend Chris Case during a romantic swim in the ocean
Heating things up: Chris gently cradled his girlfriend in her arms as a wave rolled beside them
After splashing around in the ocean, Kate emerged from the water with a wide smile upon her face.
Her wet hair was slicked back, and she appeared to be without make-up.
The Grey's Anatomy actress trekked through the sand as she made her way to a sunlounger.
Splashing around: The Grey's Anatomy star enjoyed her swimming session
Time to cool off: The Private Practice actress flashed a grin as she emerged from the water
Relaxation: She added a pair of white shades and a wide-brimmed hat to her outfit
Kate donned a wide-brimmed hair and completed the resort-style look with white-rimmed sunglasses.
She looked ready for a moment of relaxation, and couldn't contain a grin while laying upon a plush beach chair.
The Fargo star later took to Twitter to congratulate her boyfriend - who has two children from a previous relationship - along with her own father.
Happy times: The svelte actress was the picture of contentment while reclining beneath an umbrella
'Happy Father's Day to Chris, Joe Walsh sr., Hal and @DylanMcDermott ..."dad??"' The actress tweeted on Sunday.
Meanwhile for Kate, on top of starring in Bad Judge, the actress has wrapped up the upcoming thriller Dermaphoria.
The film - which is currently in post-production - focuses on a chemist who is incarcerated and accused of starting a fire, although has no recollection as he wakes up imprisoned with amnesia, IMDB reports.
Kate will star opposite Joseph Morgan, Nicole Badaan in the flick, which is slated to be released in 2014.
Time out: The flame haired beauty seemed to be enjoying a break from her filming schedule