, "So many pics I don’t post anymore…but not today #hardwork #exercise woke up like this."
Her 129,000 followers on Instagram couldn't get enough of the shot.
One commented: "Looking so beautiful, Ashley!"
A second said: "Amazing beauty."
Another added: "You are unbelievable," followed by plenty of fire emojis.
With a fourth mentioning: "Wow! Just wow."
While playing tennis, Harkleroad reached a career-high world ranking of No. 39 in 2003.
Following the French Open in 2008, the star announced she'd be modeling for Playboy, too.
In retirement, she joined the Tennis Channel as a commentator.
The model also created an OnlyFans platform to increase her revenue.
The mother of two resides in sunny California, sharing a variety of bikini shots.
In her Instagram bio, she writes, "I live in a bikini."