We used a basic over the shoulder sling (look up Slingalong on the net) for for the first 3mths then tried a Hug A bub but didnt' like it as it was too hot to wear too much material for me and DD never liked it!! At 8mths we bought an Ergo Carrier!!!! BEST thing we ever did... wish we'd bought it sooner........

Ergo's rock! love it. I think they are best for bubs from 4mths though. When they are younger than that you really need a little sling over the shoulder.