Demi Moore on Feb. 11, 2009, left, and on Sept. 26, 2011.

Having the whole world buzz about your husband’s alleged extra-marital affairs could make any woman lose her appetite.

Demi Moore has been looking noticeably skinnier in the wake of reports about Ashton Kutcher’s unconfirmed dalliances with a 23-year-old student. The U.K.’s Grazia magazine recently quoted a friend of Moore’s as saying that the 48-year-old actress’ weight has dropped to seven stone, or 98 lbs. Moore’s reps did not immediately respond to ABCNews.com’s requests for comment.

Meanwhile, Moore has been all but silent on social media. The actress who often tweets multiple times a day has only posted one message in the past week — a link to the trailer for her upcoming film, “Another Happy Day.” Speaking of potentially happy days: Moore and Kutcher appeared in public on Friday for the first time since the cheating allegations; they attended a service at a Kabbalah Center in Los Angeles.