I make Beti 59cms and 26kg.
Siska was 58.5cms and 26.6kg. Kaiah was 60cms and 26.2kg, and Sammi was already a much larger bitch at 29.5kg, and by my measurement 61.5cm at the wither.
I will measure and weigh her again at 9 months, but I don't envisage much difference in a month, after that I won't bother again until 12 months.