Loudmouth going on vacation packs lingerie pictures (8)
I believe the answer is:
braggart
'loudmouth' is the definition.
(thesaurus)
'going on vacation packs lingerie pictures' is the wordplay.
'on vacation' says to hollow out the word (remove centre letters) (after the inside letters have vacated the word).
'packs' indicates putting letters inside.
'lingerie' becomes 'bra' (I can't justify this - if you can you should believe this answer much more).
'pictures' becomes 'art'.
'going' with its middle taken out is 'gg'.
'bra'+'art'='braart'
'gg' inserted inside 'braart' is 'BRAGGART'.
Can you help me to learn more?
(Other definitions for braggart that I've seen before include "Big boaster" , "Big noter" , "bigmouth" , "One who boasts loudly" , "self-publicist" .)