Can you point to the part in the SEGM report and/or the NHS where they mention

not allowing your kid to wear clothes of the opposite gender.

Coz I missed it.

BTW, I think we should move beyond the idea that little kid's clothes have "gender" and should be starkly different depending on children's sex. Kids of both sexes should be allowed to wear what they want. I wore my older brother's clothes after he died when we were little kids, and as I grew up I and all the kids I knew wore many unisex clothes - T shirts, turtlenecks, button-downs, pullovers, jeans, cords, overalls, sneakers, wellies/galoshes, hiking boots, Doc Martens, clogs, sweat pants, sweat shirts and hoodies, various sports gear, bomber jackets, puffer coats, overcoats, trench coats, rain slicks and so on. When I was in HS, I and many girls I knew did much of our clothes shopping in US Army Navy Surplus stores - we wore (men's) sailor's pants, tops, pea coats, polar jackets, army fatigues, men's Levi's...

When my own son was little, he loved trying on my clothes, shoes and accessories and dressing up in all sorts of garb considered "feminine" and "girly." I didn't care, neither did his dad. For a time when he was 5, my son's favorite outfit was a peculiar getup consisting of a Spider Man eye mask along with a pink tutu over baggy surfer shorts and a Gap T-shirt to which he had me attach (with binder clips from Staples, LOL) a linen dish cloth at the shoulders so the dish cloth flowed like a cape. The linen dish cloth, a gift my dad and his wife brought us from a trip to Ireland, had drawn/painted images on it of items used in Catholic church rituals that my 5 year-old son mistakenly thought were weapons and talismans signifying and conferring superpowers. When we walked down the street with him dressed like that, his getup brought smiles of amusement and appreciation to the faces of many passersby of all ages from all walks of life - many of whom would make approving remarks such as, "right on, kid" and "you do you, champ" and "good job, mom."

IMO, what is damaging to kids is telling them that if they like a particular kind of clothing - or toys - or they have interests and personality traits hat aren't exactly in keeping with the narrow, strict, regressive sex stereotypes widely associated with their sex - and which are confining and chafing to members of both sexes - it means they have the mind, psyche, soul, inner essence, feelings or "gender identity" of the opposite sex and must have somehow been "born in the wrong body."

I also disagree with the advice about not allowing kids to socially transition. Unlike medical interventions, pronouns and identities are not permanent.

Have you read the interim Cass report and other information about this? True, pronouns, identities, and identity labels chosen and put on kids at an early age are not permanent. But when children adopt an opposite-sex gender identity - or, more likely, they have an opposite-sex gender identity imposed on them by their parents and the other important adults in their lives as has happened to so many people as toddlers, pre-schoolers and early schoolers like Jackie Green, Jazz Jennings, Kai Shappley, Trinity Neal and Penelope Patterson - and these children's opposite-sex gender identities are announced to everyone they personally know and to the whole world on social media too - it becomes very difficult to nigh impossible for these children to express doubts and reverse course. Many youngsters who are socially transitioned as kids and have been constantly praised and celebrated for being "trans" derive their whole sense of self and sense of self-worth from their special status as "trans" children. And many of the parents of these kids base and obtain their own social identities, sense of self-worth, standing in the world and even their professional careers on being the mums/parents of a "trans child."

Kids like Jackie Green, Jazz Jennings, Kai Shappley, Trinity Neal, Penelope Patterson grow/grew up under huge parental and social pressure to continue identifying as "trans" to keep the adults in their lives, particularly their mums, happy. Many are acutely aware that if they desisted from "identifying as" the opposite sex, then their parents/mothers would be devastated and their parents/mothers would "lose face" and social standing. They have also been indoctrinated into believing that if they stop "identifying as" the opposite sex, they will be letting down other "trans kids" and "the LGBTQ+ community," fueling "transphobia," and encouraging "transphobic violence" and "hate" that will lead to mass suicides and mass murders of "trans people."