Louise Lovely's 4 syllables (1 + 3) hit the Hollywood sweet spot.
Louise and Lovely have a workable rhythm — close to the perfect punch.
Louise Lovely's softer consonants cost it screen presence.
Matching "L"s make Louise Lovely an instant sonic hook.
Louise (6 letters) and Lovely (6) are balanced in length — clean on any poster or marquee.
Louise Lovely has mostly familiar phonemes with a few tricky patterns.
Louise Lovely has decent vowel richness, but stronger A and O sounds would lift it.