That's My Girl Fifth Harmony
This week saw Diana Vickers, Chipmunk and Usher battle it out for the top spot on the Big Top 40 Show.
But Usher made it a second week at the top of the chart with his comeback single, OMG. Taken from his sixth studio album released this week, Raymond vs Raymond, this week also saw Usher confirmed for our Summertime Ball at Wembley Stadium on June 6th.
The Big Top 40 Show with Rich & Kat - Sunday's from 4-7pm.