With bells on

Origin

Imagine a vibrant, traditional English festival where dancers, performers, and even horses were adorned with an array of jingly bells. These bells weren't just decorative; they were a declaration, announcing the joyful and enthusiastic arrival of participants, ready to throw themselves fully into the festivities. This vivid image of someone arriving splendidly adorned and noisily proclaiming their eager presence became a common idiom, signifying an arrival full of enthusiasm and keen anticipation for whatever was to come.