I can't explain this perfectly, but what do you call a girl/boy who talks with unnecessary style, childish whim, and extra gestures (like small kids sometimes do to attract people's attention).
Perhaps animated is the word you are after.
- endowed with life or the qualities of life : alive
- full of movement and activity < an animated crowd >
- full of vigor and spirit : lively < an animated discussion >
A literal alternative could be gesticulator
gesticulate: Use gestures, especially dramatic ones, instead of speaking or to emphasize one’s words
He describes the fascinating journey along the evolutionary path that ‘converted us from wild gesticulators to smooth talkers.’
How about attention seeker. It fits your description.
Attention seeking is behaving in a way which is in pursuit of attention from others. Where such behaviour is excessive and inappropriate, the term is often used pejoratively in respect of children's behaviour in front of peers, or negative domestic interactions.