Katie Holmes removes mysterious dental appliance on the Palos Verdes set of Showtime's Ray Donovan 

Katie Holmes was spotted removing a mysterious dental appliance on the Palos Verdes set of Showtime's Ray Donovan on Thursday.

It's unclear whether the 36-year-old actress was wearing a retainer, teeth-straightening Invisalign, or a mouth guard for a stunt.

A blonde assistant dutifully held a tiny blue case open for the Woman in Gold star to place it inside.

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Straightening her chompers? Katie Holmes was spotted removing a mysterious dental appliance on the Palos Verdes set of Showtime's Ray Donovan on Thursday 

Straightening her chompers? Katie Holmes was spotted removing a mysterious dental appliance on the Palos Verdes set of Showtime's Ray Donovan on Thursday 

The appliance was probably not specifically for Holmes' guest-starring role as wealthy businesswoman Paige Finney.

'Paige is struggling to find her own power within her family,' Katie - born Kate - said in a behind-the-scenes video.

'The Finney family is a very powerful family. They serve as a symbol of big money and big business...She's tough and not afraid of anyone.'  

Dental appliance: It's unclear whether the 36-year-old actress was wearing a retainer, teeth-straightening Invisalign, or a mouth guard for a stunt

Dental appliance: It's unclear whether the 36-year-old actress was wearing a retainer, teeth-straightening Invisalign, or a mouth guard for a stunt

Remain incognito with a trench coat

Katie Holmes, daughter of Sherlock Holmes...kidding, but with the trench coat and sunglasses it wouldn't seem far from the truth.

Katie was on set for, "Ray Donovan," she plays a character named Paige and we are loving Paige's coat. The actress was rocking a navy Ji Oh stretch wool trench coat that retails for $1198, click (right) and head over to Intermix where you can work that trench coat like it's never been worked before.

The trench has minimal hardware detailing. The fact that it's button-less and doesn't have too much going on makes it easy to pair with pretty much any outfit. The tie at the waist is perfect because it allows you to show that you actually have a waistline under all that wool. Go casual with Jeans and a T underneath or dress it up with a sexy bodycon dress.

The trench coat is pricey and we understand if you don't have an extra 2k lying around, that's why we've put together similar options (below) for a fraction of the price!

* PRICES MAY NOT BE AS ADVERTISED
Hard work if you can get it: A blonde assistant dutifully held a tiny blue case open for the Woman in Gold star to place it inside

Hard work if you can get it: A blonde assistant dutifully held a tiny blue case open for the Woman in Gold star to place it inside

'She's tough and not afraid of anyone': The appliance was probably not specifically for Holmes' guest-starring role as wealthy businesswoman Paige Finney

'She's tough and not afraid of anyone': The appliance was probably not specifically for Holmes' guest-starring role as wealthy businesswoman Paige Finney

Cheek kiss: For the show's third season - premiering July 12 - the Giver star was seen wearing a couple of chic trench coats with shades

Cheek kiss: For the show's third season - premiering July 12 - the Giver star was seen wearing a couple of chic trench coats with shades

For the show's third season - premiering July 12 - the Giver star was seen wearing a couple of chic trench coats with shades.

The pretty brunette was also spotted handing Liev Schreiber's 'fixer' an orange Birkin bag - presumably full of cash - beside an Aston Martin convertible. 

'I've had a wonderful time working with this cast, and I'm such a fan of the show,' she gushed. 

Katie - born Kate - said in a behind-the-scenes video: 'Paige is struggling to find her own power within her family. The Finney family serve as a symbol of big money and big business'

Katie - born Kate - said in a behind-the-scenes video: 'Paige is struggling to find her own power within her family. The Finney family serve as a symbol of big money and big business'

Hard at work: The pretty brunette was also spotted handing Liev Schreiber's 'fixer' an orange Birkin bag - presumably full of cash - beside an Aston Martin convertible 

Hard at work: The pretty brunette was also spotted handing Liev Schreiber's 'fixer' an orange Birkin bag - presumably full of cash - beside an Aston Martin convertible 

She gushed: 'I've had a wonderful time working with this cast, and I'm such a fan of the show'

She gushed: 'I've had a wonderful time working with this cast, and I'm such a fan of the show'

More to come! The third season of Ray Donovan premieres July 12 on Showtime

More to come! The third season of Ray Donovan premieres July 12 on Showtime

Last week, the single mother-of-one was forced to yet again refute an Us Weekly article claiming she's secretly in 'love' with Oscar winner Jamie Foxx.

'She was on phone with her daughter (Suri, 9) when she supposedly was overheard saying "I love you." This gossip needs to stop,' her rep told Gossip Cop in a statement.

'Katie is not dating anyone. She's not gushing about anyone. These stories are untrue.'  

'Katie is not dating anyone': Last week, the single mother-of-one was forced to yet again refute an Us Weekly article claiming she's secretly in 'love' with Oscar winner Jamie Foxx
'Katie is not dating anyone': Last week, the single mother-of-one was forced to yet again refute an Us Weekly article claiming she's secretly in 'love' with Oscar winner Jamie Foxx

'Katie is not dating anyone': Last week, the single mother-of-one was forced to yet again refute an Us Weekly article claiming she's secretly in 'love' with Oscar winner Jamie Foxx

Overheard telling daughter Suri, 'I love you': The Ohio-born beauty has been single for nearly three years since divorcing her husband of six years, Tom Cruise

Overheard telling daughter Suri, 'I love you': The Ohio-born beauty has been single for nearly three years since divorcing her husband of six years, Tom Cruise

The Ohio-born beauty has been single for nearly three years since divorcing her husband of six years, Tom Cruise.

However, Holmes did fool her fans into thinking stylist DJ Quintero 'chopped' her long locks by donning a wig at the Met Gala.

'People thought I actually cut it again, but no,' she told Into The Gloss after posting three deceptive Instagrams.  

'People thought I actually cut it again, but no': However, Holmes did fool her fans into thinking stylist DJ Quintero 'chopped' her long locks by donning a wig at the Met Gala

'People thought I actually cut it again, but no': However, Holmes did fool her fans into thinking stylist DJ Quintero 'chopped' her long locks by donning a wig at the Met Gala

'If I were to cut my hair again, I wouldn’t cut it so short that I couldn’t put it in a ponytail': This, after Holmes posted three very deceptive Instagrams 

'If I were to cut my hair again, I wouldn’t cut it so short that I couldn’t put it in a ponytail': This, after Holmes posted three very deceptive Instagrams 

'Sometimes it's tough with the internet - you'll do something different and get dressed up just to get cut down because they don't like your new haircut or something. 

'But that's probably a bigger problem. Either way, if I were to cut my hair again, I wouldn’t cut it so short that I couldn’t put it in a ponytail.'

On Tuesday, Deadline reported that the Spike Lee-produced bipolar romance Touched With Fire (formerly Mania Days) - starring Katie - scored US distribution from Roadside Attractions for an early 2016 release.

Hitting US theaters in early 2016! On Tuesday, Roadside Attractions bought distribution rights for the Spike Lee-produced bipolar romance Touched With Fire (formerly Mania Days) starring Katie

Hitting US theaters in early 2016! On Tuesday, Roadside Attractions bought distribution rights for the Spike Lee-produced bipolar romance Touched With Fire (formerly Mania Days) starring Katie

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