Conversation so far:
Was Anna Nicole Smith with Anna Nicole Smith's husband in Anna Nicole Smith's modeling year?
CANNOTANSWER.
What did she do in her modeling career?
Smith then secured a contract to replace supermodel Claudia Schiffer in a Guess jeans ad campaign featuring a series of sultry black-and-white photographs.

Question: What else did he do for modeling?
Self-contained rewrite: What else did Anna Nicole Smith do for modeling besides replacing Claudia Schiffer in a Guess jeans ad campaign?