celebrating with Bucks fizz ?

Anyone know the syn value and measure for a Bucks fizz ?

Getting together with old friends and 'wetting the baby's head' (despite the fact she's three months now, but they have only just met her)

Don't wanna be a party pooper and I don't really drink normally

Thanks

Just found this on another website bucks fizz 142ml = 4.5 syns.I don't know how right it is though