Some sites are even having professionals weigh in. BBC asked a social etiquette expert, Liz Brewer, what she thought about the kiss. Brewer's response was a bit surprising to read."Normally with a member of your family you don't kiss on the lips unless it's your husband," she told the site. "With children, I wouldn't have thought it's a particularly good habit to get into but it's her child and she's at liberty to do what she thinks is best."She added — "I wouldn't say it sets a particularly good example."The Telegraph also published an op-ed on the photo. The writer, a mother of two, writes "Children are eminently kissable and for good reason. Positive touch, including cuddles, kisses, affectionate rough and tumble and other games is absolutely essential to healthy development. There’s heaps of evidence out there that touch is not just good for bonding, for young children it’s a biological need."I texted my own mother what she thought of it, since she raised two girls. I asked her to look up the photo and tell me if she thought it was appropriate.