Yvonne Connolly has shared the BEST throwback with Louis Walsh

Yvonne Connolly has shared the most epic throwback picture.

The model mum is stepping in to host TV3’s Six O’Clock show with old pal Louis Walsh, and marked the occasion with a perfect picture of the pair.

“#tbt I’ll be on the @sixoclockshow show with Louis Walsh and @keithbarryofficial this evening. Tune in,” she wrote.

In the picture Yvonne could be a doppelganger for Sandy in Grease with that hair style and sporting a leather jacket.

#tbt I'll be on the @sixoclockshow show with Louis Walsh and @keithbarryofficial this evening. Tune in! #ceviche

A post shared by Yvonne Connolly (@yvonneconnolly_) on Apr 6, 2017 at 5:35am PDT

While a very young looking Louis Walsh is all smiles in the photo.

Yvonne will be joined on the couch by the X Factor judge and magician Keith Barry.