Augusta Kate struck gold for her celebrity owners in the concluding race on day two of the Punchestown Festival.
The Willie Mullins-trained mare carries the colours of the Masters Syndicate which includes leading owner Graham Wylie, former England international footballer Alan Shearer, golfer Lee Westwood and TV personalities Ant and Dec.
Augusta Kate made a big impression in winning her first two starts before finishing seventh against geldings in the Champion Bumper at the Cheltenham Festival.
She was narrowly denied back against her own sex at Aintree and was sent off at 100-30 for the Weatherbys Ireland E.B.F. Mares Flat Race.
Patrick Mullins positioned the five-year-old close to the pace throughout while The Nipper cut out the early running.
There was a dramatic twist heading down the back straight as The Nipper, who had showed signs of waywardness when winning at Sandown last month, ran off the track and unseated Nina Carberry.
The well-backed Forge Meadow led into the home straight, travelling well, but Augusta Kate mowed her down and got up to score by three lengths.
The winner's stable companion, Glens Harmony, was third.
Shearer tweeted: "Boom yessssssss!!! Well done #AugustaKate =`=\=`=\=\=`."
It was a second winner on the day for the winning jockey and a third winner for the champion trainer.
Mullins junior said: "That was fantastic. This mare is tough as teak.
"For a mare to go to Cheltenham, Aintree and Punchestown is very tough and Steph (Searle) who looks after her does a fantastic job.
"It's great to get a winner here and to have two is very special.
"It's fantastic for her owners. Lee Westwood was down in the yard this morning and is a lovely fellow. It's just a pity Alan Shearer isn't here, I'd like to meet him!
"She's not the biggest - I just about squeeze on to her - but it just shows you, it's the size of the heart that counts."
British challenger Irish Cavalier made the most of a drop in class by taking top honours in the valuable Guinness Handicap Chase.
A winner at last year's Cheltenham Festival for trainer Rebecca Curtis, the seven-year-old has been set some tough tasks in Grade One company this season, but ran a fine race to finish fifth in the Cheltenham Gold Cup before falling at Aintree.
Back in handicap company under top weight, talented conditional Jonathan Moore was booked to take 5lb off his back and the move worked a treat as Irish Cavalier (7-1) stayed on to beat Colms Dream by three and three-quarter lengths.
Curtis said: "We threw him in the deep end this year and we brought him to Cheltenham and Aintree. Everything was right today - the trip and the ground and he was back to handicap company.
"He loves undulating tracks. He ran well twice here last year, so it was always the plan to come back.
"He takes his racing well but deserves a break now. We could look at the Paddy Power next season, and maybe run in a conditions race as a prep.
"He's improved every year, and something like the Ryanair Chase could be a target."
Woodland Opera got his career back on track with victory in the Louis Fitzgerald Hotel Hurdle on the second day of the Punchestown festival.
Jessica Harrington's Leopardstown bumper winner looked a smart recruit to the jumping game when making a successful start at Navan in November, but finished last in the Future Champions Novice Hurdle and was well-beaten once more on his return to Leopardstown in January.
Having been given a breathing operation and plenty of time to recover, Woodland Opera was a 9-2 chance for his return in this lesser contest and responded to Robbie Power's urgings to get up and beat Val De Ferbet by two lengths.
The in-form Harrington said: "He was very tight to the second-last and was not really going anywhere. But he got out and rolling, and he pinged the last.
"He had a wind operation after running at Leopardstown and it seems to have worked. He just couldn't breathe. He'll definitely go chasing next year."
Shamiran continued his love affair with Punchestown with a thrilling third victory in the Martinstown Opportunity Handicap Hurdle on the second day of ther festival.
A field of 25 runners went to post for the opening race on day two of the Festival and despite having won this prize in 2012 and 2015, Shamiran was a 25-1 shot following a disappointing run of form.
Dermot McLoughlin's 11-year-old clearly relished the return to a sounder surface, knuckling down in the hands of Niall Kelly to see off 7-1 favourite Go Darsi Go by a head.
Shannak and Candlestick finished third and fourth respectively.
McLoughlin said: "He obviously loves it around here. The ground is the key to him as he wasn't able to handle it over the winter.
"He enjoyed himself, travelled and jumped well. Once he has that ground he can mix it between hurdles and fences."
Luke Dempsey was the leading rider of the Martinstown Series and will be on the Irish team that travels to Australia in August.
Val O'Brien was the leading trainer. Presentations will be made to both on the final day of the season here on Saturday.
