Christie Brinkley shares throwback snap of Sailor Brinkley Cook with Lindsay Lohan as she marks daughter's 26th birthday with sweet post

Christie Brinkley celebrated her lookalike daughter Sailor Brinkley Cook's 26th birthday on Tuesday.

The model, 70, took a trip down memory lane to mark the occasion, sharing a collection of photos featuring Sailor throughout the years. One picture included a surprising A-list cameo.

A throwback snap showed a very young Sailor rocking braids and standing next to Mean Girls star Lindsay Lohan.

Christie captioned the photo with a playful nod to Lohan's famous movie: 'Never a Mean Girl and always adventurous with your hairstyles!' 

In the image Lindsay donned a multi-color bikini and had her arm around Sailor, who looked adorable in a green swimsuit and white pants. 

It's unclear how Lindsay and Christie know each other, as the duo have not starred in any films together. 

Another image was a selfie of Sailor at the airport, with the proud mom writing, 'Wishing you great adventures laughter and lots of love.' 

She also posted two sweet snaps of Sailor with her dogs, calling her the 'best pup mom I know.'

Christie shares Sailor with architect Peter Cook.

She was married to Cook from 1996 until 2008.  

She's also mom to Alexa Ray Joel, 38, whom she shares with singer-songwriter Billy Joel, and son Jack Paris Brinkley-Cook, 29, whom she had with then-husband Richard Taubman.

Earlier this week Christie shared a cute selfie with Sailor.

In the snap from the front seat of their car, the forever cover girl was pictured wearing a white cowboy hat and leaning slightly towards her daughter.

'Don't be a lady, be a legend – Dolly Parton,' Christie captioned the post.

Sailor has followed in Christie's footsteps with modeling landing gigs with Sports Illustrated and Vogue just like her mom.

The lookalike duo have also modeled together on several occasions.

And her famous mom gave her some key advice when Sailor first started out in modeling.

'Her biggest advice when it comes to being on a set would be just to be as gracious as you can. I always try and introduce myself to everyone in the room,' Sailor told People last year.

'And I always try and acknowledge everyone in the room. Because I mean, my job is almost pretty much the easiest,' she said.

She continued: 'That's what she taught me, is to really acknowledge my surroundings while I'm in it and not be a diva and have fun with the creatives that I'm working with.'

Sailor also told People that her style is very similar to her mom's.

'Both of us are pretty classic,' she said.

'We love a white T-shirt. We love a good pair of jeans. We love a trench coat, good sweater, a good pair of white sneakers, black boots.'

'Sometimes I'll ask to borrow something, and I'll be like, "Oh my God, this is so cute," and she'll tell me, "Okay, but you have to give it back." And then she forgets!' Sailor quipped.

Sailor and her mom are very close. She even stepped in for her as a contestant on Dancing With the Stars in 2019 when Christie broke her arm during rehearsals.

She was terrified but followed her mom's advice: 'My mom told me to have fun with it and to not let fear stop me from doing any of it.'

Sailor was eliminated during the sixth week of the competition.