Jennifer said she is really excited to be bringing the show's unique humour to the red carpet and has already drawn up a list of celebrities she hopes to see, including One Direction and US singer Taylor Swift.
Before she left for London the Baldoyle native was busy battling with her new on- screen rival Amanda Byram.
The presenters came together when Amanda filmed a guest slot on comedy sketch show the Republic Of Telly – and while Amanda is just seven years older she was playing the role of Jennifer's mother.
And the 32-year-old says her onscreen persona was not best pleased when Amanda got most of the attention.
"Now we know why I'm such a b**** on-screen – it's because of all the compliments my mum Amanda gets," laughed Jennifer.
"Everyone was giving her praise and saying how beautiful she was, which my character didn't appreciate," added the comic star.
Jennifer was impressed with Amanda's skills and says she would definitely work with her again.
"We weren't expecting it to work out so well, but she was amazing," said Jennifer. "We had great fun filming and we got on like a house on fire."
Filming for the next series of the Republic Of Telly took place in Dublin on Monday where the pair were joined by show presenter, comedian Dermot Whelan, and correspondent Bernard O'Shea.
Fresh from her show stopping-appearance in a red lace gown at the IFTAs, where she presented an award, Jennifer will be getting the back stage scoop at tonight's Brits.
The Dubliner's career has gone from strength to strength in recent years since she appeared on the British version of The Apprentice as a straight-talking businesswoman.
While her star has continued to rise, Jennifer, who is engaged to English actor Lau Zamparelli, has said that she is happy to stay in Dublin for her career.
"I love being able to be creative and do different things.
"I definitely won't be taking off for London or Hollywood or anything like that though, I'm very happy where I am, here in Dublin," she said.