Checking whether a vector is empty

Suppose I have a std::vector say Vector

Now after performing some operations on the vector(either insertion or deletion) I want to check if the vector is empty and on the basis of that I want to perform some operations.

Which approach is better

Approach 1

if (Vector.size() == 0){ /* operations */ }

Approach 2

if (Vector.empty()) { /* operations */ }

Which is a better approach, 1 or 2?