Lady Bowthorpe is among a field of 14 as the Lockinge runner-up is back against her own sex in Wednesday's Duke of Cambridge Stakes at Royal Ascot.
Having returned to action with a victory in the Dahlia Stakes at Newmarket, the five-year-old took her form to a new level on her most recent outing.
She beat all bar John and Thady Gosden's Palace Pier, arguably the best miler in Europe, and was over five lengths clear of the third.
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Trainer William Jarvis told Sky Sports Racing: "
"I'm very pleased with her. She was tired after the Lockinge, she's a filly that gives you one hundred percent every time she races.
"She had a pretty hard race chasing home Palace Pier. She put five and a half lengths between her and the third horse. She's a tough filly.
"While we can keep her racing against her own sex, I think it probably makes sense."
Royal Ascot Group 1 races
2.30 Tuesday - The Queen Anne Stakes
3.40 Tuesday - The King's Stand Stakes
4.20 Tuesday - The St James's Palace Stakes
3.40 Wednesday - The Prince of Wales's Stakes
4.20 Thursday - The Gold Cup
3.40 Friday - The Commonwealth Cup
4.20 Friday - The Coronation Stakes
4.20 Saturday - The Diamond Jubilee Stakes
On Lady Bowthorpe's form at Ascot, where she won the Group Three Valiant Fillies' Stakes last July, Jarvis added: "Visually she was extremely impressive that day, the way she quickened away from them.
"It was a relief to go and see her win the Dahlia Stakes at Newmarket on the straight course.
"Maybe if I was given the choice I'd prefer the Duke of Cambridge Stakes to be run on the round course but she's equally effective on a straight course.
"I'd love a shower but I'm sure Ascot will provide good, safe racing ground. Of course, it's going to be on the quick side but she operates on that. She's pretty versatile."
Chief among her rivals is likely to be Johnny Murtagh's Champers Elysees, a Group One winner last year but below form so far this season.
Queen Power, Agincourt, Lavender's Blue and a previous Royal Ascot winner in Charlie Fellowes' Onassis are all in the mix at this stage - as well as Archie Watson's Parent's Prayer, an easy winner at Epsom last week.
One notable absentee was the Mikel Delzangles-trained Sagamiyra who had been prominent in the ante-post betting.
The Queen Mary has attracted 26 entries, including Wesley Ward's Twilight Gleaming, while Frankie Dettori is jocked up on fellow American Artos for George Arnold.
George Boughey's Beautiful Sunshine has created a big impression to date, as did Clive Cox's Get Ahead when winning at Ascot first time out.
Aidan O'Brien has eight of the 24 in the Queen's Vase, with one-time Derby hope Wordsworth among them.
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Another trainer who does well in the race is Mark Johnston and he can choose from three, including four-times winner Dancing King.
The Gosdens' Lincoln winner Haqeeqy is among the acceptors for the Royal Hunt Cup.
Richard Hannon has left in stable stalwart Oh This Is Us, a popular winner at Epsom on Derby day, while Shadwell Estate appear to hold a strong hand with Motakhayyel, Monthatham, Maydanny and Danyah.
The Windsor Castle has attracted 46 juveniles, including O'Brien's Cadamosto and Ward's Ruthin, while in the Kensington Palace Stakes 21 entries have been made.