Although little is known about Gianna, considering she's only famous by association, according to her LinkedIn profile, she's currently the content manager at beauty startup Violet Grey. Before this, she was head stylist and producer at hip fashion brand KITH. She graduated from Fordham in 2011.
A source close to the 21 Jump Street actor just confirmed with Page Six that they're planning to tie the knot, admitting everyone close to the loved up pair are "buzzing about the happy news".
WATCH: Jonah and Gianna holiday in Mexico together
The Hollywood A-lister, 35— who rose to fame after appearing in the most d flick of all time, Superbad—and his girlfriend began dating a little over a year ago. The couple is regularly spotted out and about and often enjoy date nights in Malibu.