Chris Waller wants jockey Jason Collett to enjoy the experience of riding She's Clean in the Tattersall's Tiara without the burden of expectation.

Collett is seeking his first Group One win aboard She's Clean in the Tiara, having ridden the mare to victory at her past two wins at Randwick.

Waller says it's important for Collett to be in a relaxed frame of mind when he is legged aboard She's Clean at Eagle Farm on Saturday.

"It's a no-pressure approach," Waller said.

"He's on a good horse who has a good draw and he just needs to enjoy the ride and see what happens."

Collett's affinity with She's Clean earned him the important ride.

"He was given the ride on one proviso; treat it like any other race," Waller said.

"He has done a great job with her, she responds to his riding and seems to like him."

She's Clean overcame the outside barrier in the 13-horse field in the June Stakes to record her eighth win from only 16 starts and has drawn ideally in stall four in the Tiara.

"She has a good winning strike rate and that's always the sign of a horse who can progress to better company," Waller said.

Although She's Clean hasn't raced in a class stronger than Listed level, Waller believes she has earned a shot at a Group One race.

"She beat the opposite sex last start at Listed level and I think when they come back to their own sex they can go up another grade or two," he said.

"That would put her at Group Two or Group Three level so she just has to get up that bit more to Group One level."

If successful, She's Clean will be the first horse to carry the famous all cerise colours of Ingham Racing to a Group One win since Forensics won the 2008 Queen Of The Turf Stakes.

Wednesday's barrier draw delivered mixed fortunes for Waller with Red Tracer allocated the outside alley (16) in the Tiara.

The five-year-old won the Dane Ripper Stakes on June 8 over the same course and distance as the Tiara from barrier 16 after a superb ride from Nash Rawiller.