Sally Gunnell told Special Report that Perri Shakes-Drayton has the potential to win a gold medal at London 2012.
The 400m hurdler won the Aviva Grand Prix in London recently, beating reigning Olympic champion Melaine Walker and setting a new personal best in the process.
Her time of 53.77secs was the second quickest in the world this year - and puts her just behind Gunnell in the list of fastest women over the distance.
Natalya Antyukh, who ran the fastest time in the world this year, wasn't there - but Gunnell is still confident Shakes-Drayton has what it takes to cross the line first.
"I really think she could get gold," said Gunnell. "Yes, she's young and people say she's got another Olympics in her, but you need to take the opportunity when you can.
"She's going into these games with one of the fastest times in the world and she needs to not just think she could get a medal but really believe she can win.
"Perri is showing her form and some of the other people in the world aren't in great shape, so she's definitely got a chance."
Great Britain could scoop gold in the 400m hurdles in both the women's and men's editions, with reigning world champion Dai Greene tipped by many to do well.
Edwin Moses - who took gold in the event at the 1976 and 1984 Olympics - believes Greene has a chance, but says the Welshman will face some stiff competition.
"He's up there among the contenders," said Moses. "But Angelo Taylor from the United States is a two-time gold medallist and has been around. He's a great 400m flat runner, has scored internationally in that and won multiple relay medals.
"Dai Greene is going to have to work because you also have Javier Coulson from Puerto Rico who ran a very fast time last year.
"But in hurdles it's an event where you can be the best and wake up feeling great but if you make one mistake at the wrong time it's curtains."