The Client List star, 34, said: 'You wake up in the morning and you go "Wow, this is no longer my body.What's going to happen today?"
The I know what you did last summer actress got engaged to her co-star Brian Hallisay in June after discovering she was pregnant, but is keen to wait to tie the knot until after she's lost her baby weight.
'I'm going to get down and be cute again and then we'll be ready to go,' she said.
'You wake up in the morning and you go "Wow, this is no longer my body.What's going to happen today?"
But despite being keen to tone up after her tot's birth in December , the brunette star admits she's enjoyed relaxing her approach in the past few months.
'It [pregnancy] teaches you not to be in control and I've been a control freak for a long time.'
Jennifer also states that her pregnancy has changed her tastebuds, with the star now craving cake and sweet treats.
Taking time off from her hit TV series, The Client List, Jennifer commented that this is 'a really happy, positive time, which I'm grateful for.'