The Grind, with Jennifer Lopez

'On the Floor' hitmaker Jennifer Lopez says she has "been grinding for a long time".

The 45-year-old beauty is among the most sought-after stars in Hollywood, but has reminded fans that she's worked her way up from the bottom in the entertainment industry, starting out as a dancer for the likes of Janet Jackson and New Kids on the Block.

She recalled: "I used to be a back-up dancer for the New Kids on the Block if you go into the archives. Oh I love them...I've been grinding for a long time."

The 'Jenny From the Block' singer is set to star as Claire Peterson in new movie 'The Boy Next Door' and she thinks it's the ideal role for her.

She told 'Good Morning America': "It seemed so perfect for me right now in my life.

"[Claire Peterson is] late 30s-early 40s...separated about to go through a divorce, deciding, feeling like at her lowest point in her life. You know how that is, her husband's cheated on her. She doesn't know how to deal with it, and is not feeling desirable.

"And this young man next door - The Boy Next Door - comes along and starts giving her little compliments. She's super vulnerable and she crosses that line. We all have been there and for that reason I felt like I understood her."

Pics: Getty Images

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