The Birthday Party Set is a Bitty Twin accessory set released in 2010 and retired in 2012. Retail cost was $48.
Cupcakes[]
Two swirl-frosted cupcakes attached to plates.
Mats[]
Two gingham cloth place mats.
Cups[]
Two pink cups with three flower decorations.
Pitcher[]
Clear plastic pitcher with a heart decoration.
Balloons[]
Three plastic balloons.