The 28-year- old actress, who earlier said that she is not in a hurry to tie the knot with her fiance William Tell, said she was working closely with her chosen designer on her custom-made gown, reported Contactmusic.
"Just had a pretty exciting meeting regarding a white dress." she posted.
Conrad's costum designer said she had no idea that Tell will propose her the way he did.
"I had no idea it was coming. I thought he would wait until he finished law school," she said.
"He didn't even ask my friends, which was a bold move. He said, 'I know you, and I know what you like.' And I love it. It's perfect," she further added.