Lindsay Lohan skips brother Michael Lohan Jr.'s wedding to longtime girlfriend to work on top secret project

Lindsay Lohan's brother got married over the weekend, but the actress wasn't able to attend his big day.

The Mean Girls star was busy working on a top secret project. 

Her spokesperson tells DailyMail.com: 'Her brother knew she would not be there they spoke before it happened and she wished him well.' 

No-show for the ceremony... Lindsay Lohan did not attend the wedding of her brother, Michael Lohan Jr., over the weekend

No-show for the ceremony... Lindsay Lohan did not attend the wedding of her brother, Michael Lohan Jr., over the weekend

The big day: Mike and his girlfriend of 10 years, Nina Ginsberg, got married in Block Island, Rhode Island

The big day: Mike and his girlfriend of 10 years, Nina Ginsberg, got married in Block Island, Rhode Island

Mike and his longtime girlfriend exchanged nuptials in Block Island, Rhode Island on Saturday, Page Six reported.

Lindsay was missing from the ceremony, and has been social media silent for the past week.

However, her parents Michael and Dina Lohan both watched their son say 'I do,' despite their contentious relationship with each other. 

Getting ready: Lindsay's little sister, Aliana Lohan, posted a video of the bride getting ready before the ceremony

Getting ready: Lindsay's little sister, Aliana Lohan, posted a video of the bride getting ready before the ceremony

Picture perfect: Ali showed a young girl getting fitted for a flower crown, while a photographer documented the moment

Picture perfect: Ali showed a young girl getting fitted for a flower crown, while a photographer documented the moment

The Sick Note star's younger sister, Aliana also attended Mike and Nina's wedding.

The singer posted a short video of the room where the bride and the flower girl were getting ready.

'So happy to have you apart of our family Nina,' she captioned the clip.

Birthday girl: Lindsay Lohan has stayed social media silent since celebrating her 31st birthday last week

Birthday girl: Lindsay Lohan has stayed social media silent since celebrating her 31st birthday last week

Up, up, and away: Her manager, Scott Carlsen, took her on a helicopter ride in honor of her big day

Up, up, and away: Her manager, Scott Carlsen, took her on a helicopter ride in honor of her big day

FaceTiming family: The actress' other brother, Dakota, couldn't be with his sister in person, so they video chatted to offer up his well-wishes

FaceTiming family: The actress' other brother, Dakota, couldn't be with his sister in person, so they video chatted to offer up his well-wishes

Last week, Lindsay spent her 31st birthday with her manager, Scott Carlsen, in Greece.

In an Instagram video, he serenaded her with a rousing rendition of 'Happy Birthday' before surprising her with a cake shaped like a boat.

He also posted a photo of them riding in a helicopter together in Mykonos in honor of her big day.

'Happy birthday to the best @lindsaylohan ❤ you forever. Xoxoxo thank you - excited for what's to come :),' he captioned it.

Her other brother, Dakota, ended up FaceTiming with his sister because he couldn't celebrate with her in person.

'Happy 31st Birthday Linds! Wish I was with you to celebrate but this will have to do. #loveyou #partytime,' he captioned a screenshot from the video call.

Wishing them the best... When Mike and Nina announced their engagement last year,  Lindsay congratulated them in a since-deleted social media post

Wishing them the best... When Mike and Nina announced their engagement last year,  Lindsay congratulated them in a since-deleted social media post

Part of the family: She also posed for a sweet selfie with her future sister-in-law earlier that year

Part of the family: She also posed for a sweet selfie with her future sister-in-law earlier that year

Sibling love: Lindsay posed with Mike (left), Ali (center), and Dakota (right)

Sibling love: Lindsay posed with Mike (left), Ali (center), and Dakota (right)

When the couple announced their impending nuptials last year, the celeb publicly congratulated them by sharing one of their engagement photos on her own Instagram.

Congratulations to my beautiful sister in law @ninaginz and my brother @mikelohan!!!' she wrote in the since-deleted post.

Earlier in the year, she also shared a selfie with her brother's longtime girlfriend, but that picture has also been deleted.

Mike and Nina were together for 10 years before getting married. 

Engagement trip: After their engagement, Mike and Nina celebrated with a vacation to Isla Holbox, an Island off of Mexico

Engagement trip: After their engagement, Mike and Nina celebrated with a vacation to Isla Holbox, an Island off of Mexico

Impressive rock: In the photos from the trip, Nina showed off a massive three-carat ring

Impressive rock: In the photos from the trip, Nina showed off a massive three-carat ring

Blast from the past: Lindsay pictured with her mom, Dina, and her siblings

Blast from the past: Lindsay pictured with her mom, Dina, and her siblings

Lindsay is the oldest of Dina and Michael's four children, and also has three other half-siblings, who are her father's other kids.

The red-head is also joining the second season of Rupert Grint's U.K. comedy Sick Note. 

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