The blonde bombshell will follow in previous in the footsteps of previous Bachie alums, Sophie Monk and Georgia Love, confirms Network Ten.
Taking to Instagram, Ali shared the news with a heartfelt message to fans about her quest for love:
"I’m 32, I'm ready to be married & have kids but I’m willing to wait until I find the right one. I’m so excited to have the chance to make meaning of my heart breaks & pick wisely to find an ever lasting love."
The official announcement reads, "After appearing on Bachelor In Paradise, unfortunately distance proved too big a hurdle for Ali & Grant. Eager to make it third time lucky in love, Ali is ready to call the shots."
Oetjan first won hearts around Australia when she appeared on the first season of The Bachelor, staring Tim Robards and Anna Heinrich.