The most common and most likely answer to this crossword clue is the 8 letter word PRETTIER
I've seen this crossword clue in The Daily Telegraph
P
R
E
T
T
I
E
R
More clues leading to the result PRETTIER
- Comparatively fair offer in the end — less important to accept that
- More attractive before — not drinking. That is right
- Peter’s wrong to assume Bond is more attractive
- King in huff; note Queen is more lovely
- After king hugged by favourite, row becomes less ugly
- Nicer column describes soldiers on the wagon
- ‘Appealing to a higher level‘ – phrase that lifer has half forgotten?
- Finer public relations story behind Spielberg character
- Queen covered by favourite band is more than fair
Buddy explains!

The straight part
We know that "more lovely" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case more lovely = prettier.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PRETTIER mean?
PRETTIER adjective- Pleasant to the sight or other senses; attractive, especially of women or children, but less strikingly than something beautiful.
- Of objects or things: nice-looking, appealing.
- Fine-looking; only superficially attractive; initially appealing but having little substance; see petty.
- Cunning; clever, skilful.
- Moderately large; considerable.
- Excellent, commendable, pleasing; fitting or proper (of actions, thoughts etc.).
- Awkward, unpleasant.