Accordingly to Wiki she is now 57, so yeah she was around 25 then.
I think Lonnie is in the Sinitta school of ever changing age. Her bio states she was performing in the early 80s. I always felt she was older - not that that is a bad thing in any way. She was quite a presence and refreshing the sound at the start of the 90s should have produced more success had the single run not been royally f****d over.