Theodore Diglio Meets Baby Sister First Time, Parents Left Confused

A viral TikTok video has captured the hilarious yet heartwarming moment a toddler, Theodore Diglio, meets his newborn sister, Esmé, for the first time—leaving parents and viewers alike amused and confused.

The video, shared by their mother Victoria (@victoriaadiglio), shows Theodore staring at his sister in complete silence as she is cradled in Victoria’s arms. Despite Victoria’s laughter at the awkward encounter, Theodore doesn’t seem to share the same sentiment, giving his newborn sister a serious, unamused stare. The clip, captioned “Not the introduction I was expecting,” has since gone viral, amassing a whopping 3.2 million views.

While Newsweek awaits comment from Victoria, the video’s light-hearted nature has sparked a variety of reactions. The text overlay humorously reads, “He met his baby sister for the first time and isn’t having it,” which resonated with viewers, garnering nearly 298,000 likes.

Though Theodore appeared less than thrilled in his initial meeting, a follow-up video posted five days later shows a much softer side. In the new clip, Theodore gently holds Esmé on his lap and lovingly kisses her forehead, indicating that their sibling bond is already beginning to grow.

Experts from the Child Mind Institute, based in New York, offer helpful tips on how to ease older children into life with a new sibling. Their advice includes preparing the toddler for the reality of a crying baby, involving them in routines, and ensuring one-on-one time to preserve the special bond.

The viral video has also prompted playful commentary from TikTok users. Some joked about Theodore’s serious expression, comparing him to a working man in his “big bro” sweater and collared shirt. One comment joked, “He took work off for this,” while another quipped, “Lil bro realized he has to share the inheritance now.”

It seems that Theodore is adjusting to his new role as a big brother in his own time, but for now, viewers are loving his entertaining first impressions.