Arnold Schwarzenegger's son Joseph Baena shared a sweet message of congratulations to his half-sister Katherine on social media over the weekend, after seemingly being left out of her lavish nuptials.
The 29-year-old bride married Chris Pratt in a lavish star-studded ceremony in Montecito, California on Saturday, and shared a photo from the big day on Instagram on Sunday.
In the caption, she detailed how the couple felt 'blessed' to be joined by their family as they became 'husband and wife in front of God'.
Joseph, 21, did not attend the ceremony, but posted a kind note under the photo.
'Congratulations!' he commented, under his username, 'Projoe2', adding two love hearts and a bottle of champagne emoji.
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Message: Arnold Schwarzenegger's son Joseph Baena shared a sweet note of congratulations to Katherine on social media over the weekend under his user name, Projoe2. Katherine married Chris Pratt in a lavish ceremony on Saturday, but her half-brother was not included
While Katherine didn't respond back to the message, fans were quick to weigh in with their thoughts on the difficult family dynamic.
One user wrote: 'I hope they invited you.' Another chimed in: 'He wasn't invited. I think Arnold is the only one that acknowledges him. Heart breaking.'
While Joseph follows all his half-siblings on social media, none of them follow him back.
Father and son: The aspiring actor and athlete was conceived during an illicit affair between Arnold Schwarzenegger and housekeeper Mildred Baena
The aspiring actor and athlete was conceived during an affair between Arnold Schwarzenegger and housekeeper Mildred Baena.
And while Arnold gave his daughter away to Chris Pratt on Saturday, however, Joseph was not in attendance.
Joseph took to social media on Katherine's wedding day to document himself working out at the gym at Malibu's Pepperdine University.
Not invited? Joseph took to social media on Katherine's wedding day to document himself working out at the gym at Malibu's Pepperdine University
It's not the first time Katherine has come under fire for
