It’s hard to say, because I can’t see the total length of the band. However, it looks to be about 24-26 inches (about 66cm), which is not big at all. Maybe in the 28F category?
I thought this would be more of a challenge - maybe a little too difficult to be honest. one clue is the band is 36.
While your digesting that one - here's another.
Not seeing the band makes it difficult, because bras are made in a similar way to cars; different sizes can re-use up to about 80% similar components. (Similar cup sizes can have different bands and vice versa).
If it’s a 36 band, it’s possibly a 36D, possibly E - but who knows. It doesn’t look large in the cup for a bra if it’s dimensions.
The second bra - I have one of these (Panache Tango II). Looks much bigger in the cups, so possibly a G cup? Maybe something like 34G?
I’m enjoying this, but it’s a bit like trying to identify the exact model of a car from the hood ornament.