Article continues below advertisementBarron Trump's ultra-exclusive birthday party reportedly left out three of his half-siblings, as mom Melania Trump was said to be calling the shots.Barron celebrated his 20th birthday on March 20, and only his half-sister Tiffany Trump got an invitation for the festivities, a news outlet reported.Article continues below advertisementBarron Trump 'Isn't Close' With Eldest 3 SiblingsTap Here To Add Ok Magazine as A Trusted SourceSource: MEGABarron Trump's three eldest half-siblings were reportedly left off the guest list to his birthday celebrations.