Newspaper: one invested in art with lady's boobs (5,4)

'newspaper' is the definition.

'one invested in art with lady's boobs' is the wordplay.
'one' becomes 'i' (Roman numeral).
'invested in' indicates putting letters inside.
'with' means one lot of letters go next to another.
'boobs' indicates an anagram.
'art' after 'ladys' is 'ladysart'.
'ladysart' with letters rearranged gives 'dalystar'.
'i' inserted within 'dalystar' is 'DAILY STAR'.