United Kingdom, March 20 -- Lily Allen has had an "incredible" boob job.

The 39-year-old singer has splashed out on "fancy lingerie" so she can flaunt her new assets but she's hoping they "drop and fluff" soon because, for the moment, there is "definitely a contrast" between how old her face looks in contrast to her new body.

Speaking to her close pal Miquita Oliver on their 'Miss Me?' podcast, she revealed: "They look really incredible when I take my top off, and my bra off, but there's definitely a contrast in age between my breasts and my face.

"I'm like 40, 18, 40, 18 ...

"There's a thing that happens a few months after you get them which is they drop and fluff.

"So they're still quite high and they're still quite hard. When they...