Here is the bouquet with this beautiful flowers.
I found similar flowers in internet, but nothing about their name.
It looks like Hydrangea but has noticable differences, so I'm still searching.
It looks like Hydrangea but has noticable differences, so I'm still searching.
Let me preface this answer with:
Thank you. Now I have another plant on my garden wish list.
This beauty is a comparatively new cultivar of Hydrangea macrophylla with filled blooms.
It is based on Japanese breeder Irie Ryoji's H19-17 or H. macrophylla "Love". Dutch breeders Van Klaveren developed the "You & Me" series, the blue version is You & Me 'Together'.
They are also available as cut flowers, e.g. from here:
So yes, this is a real plant, not a silk replica.
This is a "silk", dried and dyed or otherwise replication of a Hydrangea.