Their height difference: About 4 stilettos After announcing their engagement in October, Hayden Panettiere and on-again beau Wladimir Klitschko are taking their relationship to new heights with the June 5 confirmation that they are expecting their first child together. So what stands between the 24-year-old actress and her 38-year-old fiancé other than their 13-year, four-month age gap? Their 1-foot-4.5-inch (that's 16.5 inches!) height difference. Real talk: Panettiere's going to need more than a 4-inch pair of heels – try four pairs – like the ones she rocked at the 2011 Tribeca Film Festival, to see eye to eye with her man.