BEYONCE KNOWLES - BEYONCE FIGHTS OFF USHER'S ADVANCES

R+B beauty BEYONCE KNOWLES is being pursued by singing hunk USHER - and her boyfriend JAY-Z is reportedly furious.

The YEAH! singer, 25, is said to have become smitten with CRAZY IN LOVE stunner Beyonce and has bombarded her with flowers, gifts and phone calls.

According to website ANANOVA, the pair became close after filming her steamy video NAUGHTY GIRL together and now Usher - who recently split with long term love ROZONDA 'CHILLI' THOMAS - is determined to win Beyonce's heart.

However, standing in the way of their burgeoning friendship is Beyonce's boyfriend Jay-Z. According to insiders, Jay-Z has vowed to hold on to his woman at all costs and has been lavishing her with attention in a bid to keep his rival at bay.