She confirmed her engagement to heavyweight boxer Wladimir Klitschko two weeks ago on Live With Kelly and Michael.
And Hayden Panettiere just revealed she designed her 6-carat diamond sparkler while attending the Environmental Media Awards Saturday.
'[Montblanc] made me this amazing book where they did a bunch of sketches,' the newly engaged 24-year-old told E! News.'I told them my idea over time and tweaking things here and there, it came to fruition.'
The Nashville starlet's emerald cut wedding bling reportedly has a price tag of $500,000.
Since the Ukrainian 37-year-old was otherwise indisposed, Hayden brought along her little brother Jansen Panettierre.
The 19-year-old actor was last seen in this year's faith-based flick, The Lost Medallion.
Aside from her ring, Panettiere flashed a bit of bra in her sheer lacy frock featuring crisscrossing cutouts and Halloween colors.
The Golden Globe nominee slicked her blonde locks into a top bun and kept her make-up light and lovely for the environmental event.
