The reformed group performed a collection of their most popular songs to thousands of fans at the Odyssey Arena and also covered a handful of modern-day pop hits.
Lisa Scott-Lee sang a mash-up of her solo track 'Lately' with Chris Brown's 2011 hit 'Beautiful People', while the whole group performed their own rendition of Lady GaGa's 'Judas'.
The five-piece wore a range of colour co-ordinated outfits throughout the concert, as well as performing a selection of their iconic choreography on tracks 'Tragedy' and 'Deeper Shade Of Blue'.
Steps will continue the tour at Dublin's O2 Arena tonight (April 3) before returning to the UK for a show at Liverpool's Echo Arena on April 4.
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Photo gallery - see pictures from the opening night of Steps' 'The Ultimate Tour' below: