Natalie is quite clumsy, as shown when she falls after making a funny face at Agnes's party.
Despicable Me 2
At Agnes' party, Jillian introduces Natalie and ask if Gru wants to date with her. Natalie then makes eyes to him, but the table she leans suddenly collapses, so she falls after and all desserts on that table also fall to the ground.
She gets up but still unbalanced, and one of the children in the party throws a can to her, which makes her falls back to another table full of cans; the table also collapses and Natalie falls to the ground again.