Like Elizabeth, popular online, full of spirit (8)
I believe the answer is:
virginal
'like elizabeth popular' is the definition.
I can't tell whether this definition defines the answer.
'online full of spirit' is the wordplay.
'online' becomes 'viral' (I can't explain this - if you can you should believe this answer much more).
'full of' is an insertion indicator.
'spirit' becomes 'gin' (alcoholic spirit).
'viral' enclosing 'gin' is 'VIRGINAL'.
Can you help me to learn more?
(Other definitions for virginal that I've seen before include "Pure - very early keyboard instrument" , "Antique keyboard" , "in immaculate condition" , "Rectangular harpsichord" , "Unblemished" .)