Greg and his partner Susie are parents to two-year-old son Milo and the tot was seen visiting his dad at rehearsals during last weekend's instalment of Strictly Come Dancing.
But despite being dressed in a red jumper, black and white trousers and blue boots, Greg and Susie received vast comments on social media that accused them of '"dressing Milo like a girl", especially as his hair was in a top knot.
Writing in her online blog, mymiloandme, Susie explained to her readers that they put Milo's hair into this style because they are growing it. She continued: "I expected a lot of criticism for this; I was braced, prepared and in no way bothered.
"I know a top knot for a little boy is still a bit iffy and of course, well aware it makes my cherub-faced son resemble a girl. I'm not a total moron and I do have the ability to see. The thing that did surprise me though, was the backlash I received for his outfit and the fact I apparently, dress my son 'in girl clothes'."
Having listed examples of some of the hurtful comments she and Olympic athlete Greg received, Susie hit back: "I love that dressing the child falls on Mum. Like Greg lays out camouflage tracksuits each morning in the hope I might waiver and I beat him in to submission with something purple and frilly 'til he p*sses off to dance training.
"Greg and I both love fashion and Milo's dad is more than happy for him to wear the clothes in his wardrobe."
She added: "I'm safe in the knowledge Milo's trendy (I can use that word now I'm a mum) and, even if he wasn't, he's happy. And that's all that matters. The VT from the other night showed a cheerful, vibrant young boy-girl and that's enough to keep my spirits soaring. I can gladly confirm I dress my son in 'girl clothes'."
Showing his support and backing, Greg has tweeted Susie's blog out to his 200,000 followers.
Strictly Come Dancing continues this weekend on BBC One.