Catherine Zeta-Jones and Micheal Douglas are celebrating their joint birthdays.

The longtime lovers marked the milestone with heartwarming messages.

The actress took to her Instagram to give a shout-out to her hubby, posting cute selfies.

She wrote a heartfelt message, disclosing the age-mark milestone they've attained as a couple.

Douglas also posted a picture of himself and his wife at the Taj Mahal in celebration of their birthdays.

Zeta-Jones, in a subsequent post, shared a video of both of them in a helicopter, heading out to a celebration.

Douglas and Zeta-Jones have been married for over 21 years.

They first crossed paths at the Deauville Film Festival in August 1998.

The longstanding couple is parents to two children, son Dylan and daughter Carys.