According to Official Guinness Records,
The most jumpers put on in one minute by a team of two is 15 and was achieved by Aito Shimada and Haruka Nishida (both Japan) during GWR LIVE! at Abeno Q's Mall in Osaka, Osaka, Japan, on 23 December 2017.The attempt was held during the GWR LIVE! challenge. Aito Shimada wore the jumpers while Haruka Nishida assisted.
For a complete list of 2017 records, please visit 2017 Guinness Records in Japan.