What is the fine-grained topic of the following text: A source apparently told the daily that Tory Burch is now working with her ex-husband to clear up any perceived similarities between her brand and his, saying: "'She is asking him to change his concept, which includes C. Wonder’s product, the design and the boutique.'" Only return the topic.
Tory Burch's effort to differentiate her brand from her ex-husband's