Little black dresses, classic pumps, and nude heels, those are some of the versatile pieces that you can wear from day to night or from work to weekend. Strappy flat sandals, on the other hand, are a different case. They can be versatile, but their usefulness will depend on the design, silhouette, and details.

Interestingly, Katie Holmes recently made a case for flat strappy sandals as cocktail-worthy footwear. She wore her flat strappies with denim overalls while running errands in New York City early this month, and then didn’t bother to change her shoes when she attended the 2014 Global Citizen Festival Launch Party held on the same day. Instead of overalls, however, Katie wore the beaded sandals with a black strapless jumpsuit.

katie-holmes-reveals-what-she-likes-to-cook-for-suri-01-horzKatie Holmes runs errands in New York City while decked in denim overalls and flats sandals, July 10, 2014

katie-holmes-global-citizen-festival-03-horzKatie Holmes switches her overalls and wears the same sandals to the 2014 Global Citizen Festival Launch Party held at Milk Studios in New York City, July 10, 2014

Can you rock a pair of flat sandals with a black jumpsuit to a cocktail party like Katie here?

Flat sandals are generally informal, but if the shoes are crafted or detailed with special materials like Katie’s sandals, then I guess you could say they’re dressy enough to be worn to a cocktail event. Would you agree?

Katie’s flat strappies are from Alaia. I think they’re from an off-season collection because I couldn’t find them anywhere. However, I did come across these thong versions, which are also from Alaia. Much like Katie’s sandals, these feature uppers crafted from suede and croc-embossed leather cut to perfection in squares and zigzags, while metal studs decorate the straps for a touch of edge.

Alaia-gem-sandal-152-2

Alaia-gem-sandal-152-3

1945-Alaia-women-s-gem-sandal-4Alaia Flat Sandals, sold out

If you want to take a cue from Katie and sport flat sandals to a cocktail party or high-profile chi-chi, then better pick out a pair that is detailed with special add-ons like crystals, studs, and metal decorations. Make sure the sandals are clean too. For those of you fond of designer pieces, you can start with these sandals from Giuseppe Zanotti.

giuseppe zanotti gold stud sandalsGiuseppe Zanotti Studded Thong Sandals, $695

giuseppe zanotti crystal sandalsGiuseppe Zanotti Crystal Embellished Thong Sandals, $695

giuseppe zanotti gold pailette sandalsGiuseppe Zanotti Gold Detailed Thong Sandals, $1295

$ 695