react-transition-group show child component with animation and delay after parent is rendered

Question

How can I animate-in a child component after the parent is rendered with react-transition-group?

I would like to show the Child Component as the parent is getting rendered with delay and some kind of animation for example slide-up.

  <CSSTransition
              in={true}
              timeout={2000}
              classNames="show-indicator"
              transitionName="show-indicator"
            >
              <Indicator /> //this is my child component
  </CSSTransition>

at this moment no class will be set