toddler and new baby

i have just had my second baby and have a 2 year old daughter. normally she is a very sweet lovely little girl who is always happy. in the last few days she has just turned into this horrible crying, screaming, tantrum attention seeking child.
It is so awful to watch and really difficult to deal with. I realise she is feeling insecure about the arrival of the new baby ...
wondering if any who have been or are in this situation have any tips or advice!?.......

Yeah Spencer was younger too (19 months) but I think inclusion is the key. Get her to help with changing nappies, picking out clothes for the baby to wear. Say things like "shall we put the baby to bed" and get her to come with you (if you can, not always practically if baby is very little and needs lots of settling) might work better with getting baby back up.
And yep one on one is very important (although some days it's impossible). One of the things I would do is read to Spencer whilst feeding Kyle and even when Kyle was awake I would sit with him in his swing and me on the floor and play with Spencer so my attention was on Spencer and Kyle was watching us.
It does get easier, and it's all worth it once they start interacting, my two are as thick as thieves already and the main problem I have now is stopping Spencer from going and waking Kyle up cos he wants to play.

Sunshine - I have a (nearly) 2 1/2 year old and a 6 week old and we have been going through (to a certain degree) the same thing.

I agree with sometimes making sure she comes 1st, not always but just sometimes. If bubs is down in bed and she's awake do some fun things with her. I also read stories to Elle while I am feeding Brodie (like cuppatea does). And definately include her in things you do. Elle often helps me bath Brodie - we do end up with way more of a mess than if I did it all by myself but meh - it can always be cleaned up later.

Recently we have introduced a sticker chart for the potty and good behaviour. When its all full she is getting her very own goldfish, she is very excited about that, so we talk about that alot - especially when she is grumpy as it gives her something positive to think about.

Also Elle is definately in the terrible 2's stage where she will push my buttons and seems to do it more when I am really really tired (they do pick up on that - and sometimes play on it), perhaps theres a bit of that going on for you too.

hahaha Nikki I should pull up that thread of mine where you reckoned Tom was already a terrible 2, nope he wasn't, now he is

Yeah that is a good point Monikah. We often split up and one will stay home with Kyle and whichever of us is running an errand will take Spencer with us. He loves going out and he gets a bit of one on one at the same time, even if it is just to go to the supermarket, or better still to mitre 10 with daddy then they are gone for ages.