Short answer — the shoe brands most commonly associated with celebrities at engagement events, proposal/red‑carpet moments, and high‑visibility party photos are:

• Christian Louboutin — signature red soles; go‑to for red carpet, proposal/engagement party heels.
• Manolo Blahnik — classic, iconic evening pumps (famously tied to high‑glamour moments).
• Jimmy Choo — popular for bridal, formal events and celebrity photo moments.
• Stuart Weitzman — known for elegant, wearable evening sandals and bridal styles.
• Aquazzura — fashionable, feminine heels and sandals often chosen for engagement/party looks.
• Valentino (Rockstud and classic) — designer appeal with recognizable detailing for bold event looks.
• Roger Vivier — luxe, embellished pumps and buckled styles seen at formal events.
• Badgley Mischka — bridal‑friendly formal shoes commonly seen at engagement/bridal parties.
• Bottega Veneta — current fashion‑forward heels and mules favored by trendsetting celebrities.
• Gucci / Prada / Saint Laurent — major luxury houses that celebrities choose for polished event footwear.
• Alexander McQueen / Balenciaga / Maison Margiela — edgier runway‑style shoes celebrities wear when they want a fashion statement.
• Golden Goose / Common Projects / Nike / Adidas / Yeezy — for casual/celebrity streetwear looks and “off‑duty” engagement‑announcement photos.

Why these brands? Celebrities and stylists pick them for recognizability, red‑carpet pedigree, bridal friendliness, comfort options, or trendsetting aesthetics — so they show up frequently in engagement photos, parties, proposals and press images.

If you meant something different by “celebrity engagements” (for example, shoes worn to engagement shoots vs. shoes associated with celebrity engagement rings/events), tell me which and I’ll tailor the list.