A Hollywood power couple left fans doing a double take as they shared throwback snaps of their Halloween costumes from over the years.

They took to Instagram on Thursday to mark the spooky annual occasion by sharing a whole host of pictures of them dressed up over the years.

And they looked strikingly different as they dressed up in various garments, including in snaps from Bette Midler’s Hulaween Charity Gala in 2019.

For the occasion, they dressed up as Old Hollywood icon Jean Harlow and T.E. Lawrence from the 1962 film Lawrence Of Arabia.

But do you know who they are?

Throwbacks: Hollywood power couple Catherine Zeta-Jones and Michael Douglas left fans doing a double take with their latest post

Different look: For her costume, Catherine, 54, ditched her recognisable dark locks for a platinum blonde wig, which was styled in a short, curly bob as she channeled Jean Harlow

It’s Catherine Zeta-Jones and Michael Douglas!

For her costume, Catherine, 54, ditched her recognisable dark locks for a platinum blonde wig, which was styled in a short, curly bob.

She wore a plunging silver gown embellished with sequins as she channeled Jean as seen in the 1933 pre-Code film Dinner At Eight.

Meanwhile, her husband Michael, 79, was in full costume as T.E. Lawrence as portrayed by Peter O’Toole in the 1962 epic Lawrence Of Arabia.

Catherine also shared a fun throwback snap of herself dressed up as Harry Potter for Halloween as she posed with her and Michael’s kids Dylan, 23, and Carys, 20.

She simply captioned the post: ‘Halloween over the years.’

Her latest post comes after Catherine gave an insight into her make-up routine as she got glammed-up in her make-up chair with her pet pooch curled up on her lap.

The actress took to Instagram on Thursday to share a whole host of black-and-white snaps of herself getting her make-up done.

Fun times: Catherine also shared a fun throwback snap of herself dressed up as Harry Potter for Halloween as she posed with her kids Dylan, 23, and Carys, 20

Gorgeous: Her latest post comes after Catherine gave an insight into her make-up routine as she got glammed-up in her make-up chair with her pet pooch curled up on her lap

Nap time! Her pet dog Taylor could be seen blissfully curled up on her lap having a snooze as her beauty regime got underway

Catherine Zeta-Jones wows in white at Wednesday premiere
She put on a very glamorous display as she got a stunning smokey-eye make-up look applied, along with lashings of mascara.

Her pet dog Taylor could be seen blissfully curled up on her lap having a snooze as her beauty regime got underway.

In one snap, Catherine held her finger up to her lips in the ‘shhh’ sign as she didn’t want her beloved dog to be disturbed from his nap.

Alongside the gorgeous snaps, she gushed over her pooch as she simply wrote: ‘#mydog #taylor.’