Hilary Duff defends kissing son on lips

“For anyone commenting that a kiss on the lips with my four-year-old is ‘inappropriate’, go ahead and click a quick unfollow with your warped minds and judgment,” she said. Among the thousands of comments under the original photo, the vast majority now support Duff kissing her son. The Lizzie McGuire star fired back at those comments with another Instagram post, telling them to unfollow her if they had such “warped minds”. Actress Hilary Duff sparked a heated debate after posting a photo on Instagram of her and son Luca kissing on the lips at Disneyland. Although the pic has 257,000 likes currently, some comments claimed the peck was “inappropriate” and “not healthy”.