Ivanka Trump's daughter, Arabella, just loves her new baby brother, Theodore!
Just days after the 34-year-old star gave birth to her third child, Ivanka took to Instagram to post a cuter than cute video of Arabella, 4, singing "Twinkle, Twinkle, Little Star" to little Theo.
"Arabella serenading her new baby brother," the businesswoman captioned the sweet clip.
Ivanka and her husband, Jared Kushner, 35 — who married in October 2009 — welcomed Theodore on Sunday, March 27. They are also parents to a two-year-old son, Joseph.