According to Official Guinness Records,
The largest "pass the parcel" measured 2.09 m (6 ft 10 in) in height, 2.51 m (8 ft 3 in) in width, 3.44 m (11 ft 3 in) in length, and was achieved by Royal London (UK) at The Oval in London, UK, on 13 February 2014.
For a complete list of 2014 records, please visit 2014 Guinness Records in United Kingdom.