Lopez 'confused by Phelps attention'

Jennifer Lopez has reportedly claimed that she is surprised by all the attention eight-time Olympic winner Michael Phelps is receiving.

According to a source at Good Morning America, the singer thought her efforts in training for triathlon were greater than Phelps's swimming gold medal haul.

After filming a TV interview, she apparently said "she couldn't understand why everyone is talking about that swimmer."

The source added: "She couldn't come up with [Michael] Phelps' name, and then she yammered on about how she was the one training for a triathlon just six months after giving birth, and how that was the big story right now, not 'the swimmer'."

Lopez's triathlon will raise funds for Los Angeles Children's Hospital.