The 66-year-old 'Rocket Man' hitmaker is keen to host a big celebration for Theodora 'Teddy' Rose's first birthday and is also hoping to make it a joint bash for his two children Zachary and Elijah, reported Contactmusic.
"Rob and Elton have been good mates for years. Elton and David Furnish want it to be a joint bash for their two lads Zachary and Elijah. They are sparing no expense," a source said.
"The party's going to be at Elton's pad in Beverly Hills and there will be no shortage of other celebrity families. Adele and her son Angelo are invited as well as Gary Barlow and his family," the source added.
John is planning to significantly reduce his workload next year when Zachary goes to school because he wants to be around to care for him.