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The singer made an appearance at Scala in Kings Cross as part of her mini comeback tour.
Today, she reflected on the night, saying: "Had an amazing time last night singing at Scala. Thank you to everyone who came down and supported me over the last few days."
And it seemed the 43-year-old was in a partying mood last night as she stayed out until 3.30am.
Louise headed to Freedom bar in Soho with pal Frankie Bridge to celebrate closing her tour.
The Strictly Come Dancing duo were spotted outside the bar and Louise looked to be chatting closely to a mystery man, looking intently at their phones.
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Sexy Louise Redknapp

Louise is currently a solo agent after her divorce from Jamie Redknapp in December 2017.
Formerly one of the UK's golden couples, the duo confirmed their split in October 2017.
Louise told Stella magazine that competing on Strictly in 2016 had made her rethink her life, admitting she felt like a Stepford Wife.
Rumours about troubles in their marriage began circulating back in April last year, with the Sun reporting that friends blames the apparent "Strictly curse".
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Sexiest Strictly pros

“My priority and his priority is our children”
Louise Redknapp
Louise and Jamie have two children together – Charley, 13, and Beau, nine.
Addressing the rumours surrounding their split, Louise told This Morning presenter Eamonn Holmes where her focus was.
She said: "My priority and his priority is our children and protecting them and keeping as much of it as private as possible and loving them and putting them first and that's what we're focusing on."
Last night, Louise hit the stage in a sizzling combination of a sheer bra and open blazer.
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Couples struck by the Strictly curse

The star, formerly of Eternal, performed her first show in 15 years last year and it sold out in 10 minutes.
Following the success, she announced her Intimate & Live Tour which kicked off in Manchester earlier this month.
Dates in Glasgow and Birmingham followed, before the final performance in London last night.