Melania Trump is said to be doing everything in her power to keep her only son, Barron, away from his older siblings, Wonderwall.com can reveal. The youngest Trump celebrated his 20th birthday on March 20, and one source claims only his sister Tiffany was included on the guest list. 'They're Not Close At All' Melania Trump is said to have been in charge of Barron's birthday list. MEGA "They're not close at all," the insider told Rob Shuter for his Substack. "This wasn't an oversight. They were left off the list.