Don Jr., Eric, Ivanka, Tiffany and Barron. Over the years, several of Donald J. Trump's adult children have stepped into the spotlight to work with him on real estate ventures, judge contestants on "The Apprentice" and even advise him during his first presidency.

Barron Trump had a sweet moment with his half-sisters, Ivanka Trump and Tiffany Trump, following their dad, Donald Trump's inauguration at the US Capitol in Washington D.C. on Monday. The 18-year-old NYU-Stern student smiled during a playful moment with his siblings while the pair posed for a photo.

Barron Trump returned to the inaugural stage on Jan. 20 to watch his father, Donald Trump, be sworn in as the 47th president of the United States. The 18-year-old, who is 6 feet 8 inches tall, towered over his mother,