London: He humiliated her when he allegedly leaked a video of her performing a sex act while they were together.
And Tulisa Contostavlos let off a little steam in the direction of her ex-boyfriend Justin Edwards while performing at the Barclaycard Wireless festival in London this afternoon.
According to the Daily Mail report, the 23-year-old dedicated her song Titanium to him, saying: 'this is to my d**khead ex boyfriend, Justin f****** Edwards!!" .. GO T!'
The crowd reportedly appreciated her dig, cheering Tulisa on as she vented a little pent-up anger.
The UK isn't known for having the best weather on record but that wasn't going to stop Tulisa Contostavlos from wearing what she wants.
Tulisa performed baring more flesh than what most people would feel comfortable doing.
As she paraded around on stage in a very low-cut bra top, there was no sign of Tulisa feeling the cold.
She teamed the busting black garment with a rather short and high waisted star print skirt.
The red, white and black item of clothing showed off the N-Dubz star's toned and tanned legs and also revealed some of her midriff.
Tulisa completed her look with a white and black jacket that featured an over sized collar, and black trainers.
She accessorised with several gold necklaces, large hoop earrings and a mous
Her long dark hair was pulled back into a high ponytail and she also matched her red lipstick to the stars on her skirt.
The X Factor judge gave no indication to how she was feeling about her performance via her Twitter page, but no doubt she enjoyed herself.
Another young female star who took to the stage today was British singer Rita Ora.
The 21-year-old opted against showing her legs off but she did highlight her tiny waist and very flat stomach in a black rolled up T-shirt.
The West London singer teamed it with a pair of baggy camouflage trousers that were covered in writing including the words 'need a rest.'
The R.I.P singer - who caught the attention of Jay-Z a few years ago - completed her laid-back look with sunglasses a black hat and chunky boots.
And they crowd certainly weren't going to let the on/off weather spoil their day and were seen crammed together in Hyde Park as they watched some of their favourite artists.
Rihanna, Jessie J and J.Cole are set to perform at the London festival tomorrow.
