Viṣṇu and His devotees on the Vaikuntha planets look exactly the same.

Rukmiṇī - "On the picture today that you gave Jadurani a picture of Śrī Viṣṇu. There is a foot on His chest. We didn't know what that was, there was a little footprint."

Srila Prabhupāda - "There are some special marks on the chest of Viṣṇu by which in Vaikuṇṭha He is known as the Supreme Personality of Godhead. Otherwise, in Vaikuṇṭha, everyone has got the same feature like Viṣṇu. 

In Vaikuṇṭha the inhabitants have their svarūpa. Their form is exactly like Viṣṇu. There is no difference. 

When the Viṣṇudūtas came to take Ajamila from the hands of Yamadūta they were all four-handed with śankha cakra gadā padma as Viṣṇu, the lotus flower, this disc, and the club, and the conchshell. 

There is no difference in the body, simply by that special mark, some special hair on the chest and there is Bhṛgu, I mean to say, sole, a mark of the feet of Bhṛgu Muni. 

So by some special marks one can recognize He is Lord Viṣṇu otherwise, from bodily features and from dress and from ornaments, there is no distinction between Viṣṇu and His devotees in Vaikuṇṭha. 

They're all four-handed. 

Svarūpa sāyujya sālokya sārṣṭi. They have got equal features, I mean to say, situation of prosperity, wealthy, equally, almost equally powerful. 

So practically there is no difference between Viṣṇu and Viṣṇu-bhakta devotee.

In Kṛṣṇaloka also, only Kṛṣṇa is little blackish, no devotee is blackish like Krsna.

In the Kṛṣṇaloka they are two-handed, and Viṣṇuloka they are four-handed. 

All the Vaikuṇṭhas, the residents, they are four-handed. You want four-hand or two-hand? (laughter) Mr. Murti? What do you want? Four hands?"

Mr. Murti - "Two hands more than Kṛṣṇa."

Srila Prabhupāda - Yes, in this universe only Brahmā has got four hands. Nobody else within this universe is four-handed. 

In this brahmāṇḍa within this universe, there is a planet where the ocean is of milk. Just like here we have salted water ocean. 

There are many oceans. Ocean of oil, ocean of ghee, ocean of milk. The ocean of oil, you have got experience in this planet. 

Within the earth you are depending on your motor car civilization and depending on that ocean of oil. 

You are getting oil and lavishly using it. Stock is supplied by God. Your material advancement will be finished if the stock is not supplied by the Lord. 

So these foolish men, they do not know. They think that "Without God we can live." Who has created the ocean of petroleum within the earth? Is it possible for human being? (laughter)." (Room Conversation - April 11, 1969, New York City)