Family bonds are strong and sometimes unbreakable, and this precious little girl is the living proof. We know that love between siblings can be a bit tricky (fighting, toy supremacy and such), but the love between cousins is also very strong.

This adorable girl has a newborn cousin that was born just a day before her birthday, and she doesn't understand why she can't attend. Mom gives her best to console her, but as you can probably see – nothing works.

Sierra is heartbroken after finding out that her long awaited baby cousin can't make it to her birthday party, even though she had just been born 5 minutes before this video was filmed! Adorable!